2022 Mercedes-Benz AMG SL55 TSBs

The update is free of charge and runs in the background, which takes about 8 minutes to install. During this time, the vehicle can be driven without any restrictions, and the new software will be active with the next ignition cycle. Remedy MBUSA will conduct an OTA service campaign. Remote software updates are automatically downloaded and installed in the customers vehicle free of charge and do not require a dealer visit.

CarPlay over Wi-Fi Audio cuts out Device not recognized No operation possible Cause There are multiple possible causes for an iPhone disconnecting from a vehicles head unit while using Apple CarPlay. These include hardware, software, and environmental factors: Environmental Interference External Sources: Passing under toll bridges, driving near airports, or areas with heavy electronic interference (e.g., as described in LI82.85-P-076157) can cause connection drops. Cellular Networks: Interference from nearby cell towers operating on similar frequencies (usually 2.4GHz or 5GHz) can disrupt the signal. Storage Location: Keeping your phone in a handbag or surrounded by other objects inside the vehicle can create physical or electronic interference. Device and Software Issues Head Unit Software/Hardware: Outdated firmware, bugs, or hardware faults in the vehicles head unit can prevent a stable connection. iPhone Software/Hardware: Similar issues in the iPhone, including buggy iOS updates or hardware problems, may affect performance. Reset or Reboot: Automatic rebooting or resetting of either the head unit or the iPhone will temporarily disrupt CarPlay. Connection and Settings Wired Connections: Faulty Cable: A damaged or poor-quality USB cable can cause intermittent or total loss of connection. USB Port Issues: Dust, debris, or physical damage in the USB port of either the head unit or the iPhone can also lead to disconnects. Wireless Connections: Intermittent Bluetooth/Wi-Fi: Unstable wireless communication (Bluetooth/Wi-Fi) can frequently break the Car- Play connection. Power Management: Battery Saver Mode: Enabling low power mode may restrict background processes, affecting CarPlay. Vehicles Electrical System: Unstable power delivery from the cars battery or electrical interruptions can cause the head unit to malfunction. Phone & App Configuration Phone Settings: Incorrect or conflicting settings (especially Bluetooth or Wi-Fi) on your iPhone can interfere with the CarPlay link. Third-Party Apps/Profiles: Installed apps or configuration profiles may conflict with CarPlays operation. Native apps are apple maps, apple music, audio books, apple news, podcasts, messages and phone. All other apps are considered third party apps. App Conflicts: Running conflicting apps that require similar system resources as CarPlay can cause instability. Mobile Data Plan: Streaming from online sources without sufficient mobile data can result in lost connectivity. Other Factors Heat & Overheating: If either the phone or the head unit overheats, they may disable certain functions to prevent damage, leading to disconnection. User Actions: Accidentally disconnecting the device in settings, or physically moving or bumping the phone or cable, may disrupt the connection. Remedy FUP6 (E605.8) software has been released for the following chassis: 118, 177, 243,247,206,254,167,294,295,296,223, 297. Flash available software for the head unit and test for function. The LI will be updated once available for the remaining chassis. If the complaint remains after the SW update please continue with the steps below. Guided Diagnostic Path for Apple CarPlay Connection Issues: Please follow the steps below to systematically diagnose and resolve CarPlay concerns:Update Devices: Ensure the iPhone is updated to the latest available iOS version. Ensure the vehicles head unit is updated to the latest software version available. Isolate the Issue: Check whether the symptom persists with another iPhone running the latest iOS version. Test both wireless and wired CarPlay connections: Does the issue only occur with wireless CarPlay? Does the wired connection to the phone function correctly? Further Troubleshooting Steps: Reboot the iPhone. See attachment for further instructions.

One or More PARK Sensor Activations 3. Red Ring Around Vehicle 4. "Active Parking and Parking Assist Inoperative" on Instrument Cluster 5. Cameras 6. Other Park Topics. Cause Various root causes Remedy See attached diagnostic guide.

Cause The firmware installation was incomplete. Remedy In the A26/17 control unit "MBUX multimedia system" (head unit), use XENTRY to carry out the special process "All Modules"; this will reinstall the firmware completely.

Cause The firmware installation was incomplete. Remedy In the A26/17 control unit "MBUX multimedia system" (head unit), use XENTRY to carry out the special process "All Modules"; this will reinstall the firmware completely.

The following fault codes are stored in the PTCM control unit: P1CA000 B188C2A Cause If the trunk lid is repeatedly opened manually or the vehicle has experienced undervoltage, the trunk lid loses its normalization due to faulty software coding. Remedy For vehicles with a production date up to 01/22/26 (SL (232)) or 01/27/26 (GT (192)) 1. Update the HKS N121/1 control unit and perform SCN coding. (If no new software is available, still perform SCN coding) 2. Perform normalization of component 'N121/1 (Liftgate control control unit)'. Vehicles produced from January 22, 2026 (SL (232)) and January 27, 2026 (GT (192)) onward were factory-fitted with the correct Software Calibration Number Table.

implausible (>365 days) for the following conditions: for the date of the vehicle handover or the last conducted and confirmed Service A/B Cause Case 1: Observe the following on vehicles with a disconnected on-board electrical system battery (12V/48V): The period in which the on-board electrical system battery is disconnected cannot be counted by the maintenance computer. As soon as the on-board electrical system battery is connected again, the maintenance computer automatically starts counting without making a correction to the remaining time (days until the next service). Case 2: If a disconnected on-board electrical system battery (12V/48V) can be ruled out as the cause, it is possible that: The daily turnover counter inside the electronic ignition lock (EIS) has experienced memory loss. This anomaly was detected in the EIS software from modification year 2022 onward. To do this, please check the plausibility of the daily turnover counter as follows: If "TUSZ Assyst Plus" < the actual days since "Handover Date/DAY/Month/Year," then proceed to remedy for case 2. Information: A variation of 2-3 days is still considered plausible. If "TUSZ Assyst Plus" is plausible, or if a remaining time of 365 days is permanently displayed, check whether the vehicle has been handed over. These types of cases have different causes. (The respective values are included in the maintenance data in the control unit log of the instrument cluster). Remedy For case 1: When the on-board electrical system battery is disconnected, this period must always be taken into account for these vehicles, and the following condition must be met for a correct calculation to be made: (A): The number of days from the "date of vehicle handover or last service A/B" to the "date on which the vehicle arrived at the workshop." (B): Remaining time (days until the next service, as shown in the instrument cluster). (C): Days on which the on-board electrical system battery was disconnected. The formula requires the following condition to be complied with. 365 - (A) [days] = (B) - (C) [days] For case 2: If the on-board electrical system battery (12 V/48 V) was not disconnected and the remaining time shown in the customer or workshop menu on the instrument cluster (days until the next service) is implausible in terms of the date of the vehicle handover or the last performed and confirmed service A/B, or the condition in the formula was not met, the service can still be performed and confirmed. For vehicles arriving more than 90 days after the service due date, the DSB service history can only be corrected by re-entering "Vehicle regularly serviced." A software fix for the EIS (electronic ignition lock) is currently in planning. The objective is to have a remedy available for 2026. Until the remedy is available, it is advisable to inform the customer that the next service is due again after 365 days at the latest.

192 Cause Increased quiescent current Remedy 1. Conduct quiescent current measurement. DO NOT USE A DVOM IN LINE - this will blow the fuse in your meter. Use an amp clamp with either a DVOM or XENTRY Scope and wait until the vehicle has gone to sleep (usually takes 6-10 minutes). Once the vehicle is asleep, observe the quiescent current for 10-15 minutes and note down the values. A stable quiescent current should be less than 50 mA. Values higher than this figure are considered not OK (NOK) and require further analysis. 2. If the quiescent current is higher (> 50 to 100 mA): Check whether software updates are available for relevant control units: Door control units (DMD (N69/1), DMP (N69/2), DMRL (N69/3), DMRR (N69/4)), EIS (N73/3), PTCU (N127), OHCM (N70), GW (N73/3*1) After installing the updates: measure the quiescent current again If the quiescent current is < 50 mA, the vehicle is OK If the quiescent current is between 50 and 100 mA, continue with step 5 If the quiescent current is between 100 and 200 mA, continue with step 3 If the quiescent current is between 200 mA and 1 A, continue with step 4 3. For no-load current values of 100 to 200 mA: Lock all doors and hood so that the control unit recognizes the door status as "closed" but the doors are open. Disconnect door separation points (A-pillar connection) when the vehicle is asleep, starting with the driver's side Document the quiescent current value If there is no change: Disconnect the door separation point on the front passenger side and note down the value again If the quiescent current falls below 50 mA after the door separation point is opened, the respective outer door handle must be replaced If the quiescent current drops below 50mA, the draw has been addressed and the vehicle can be released If the quiescent current remains above 50mA after the relevant door handles have been successfully replaced, please create a TIPS case to the LV/HV inbox and retain the removed door handles for the time being If the quiescent current does not change after the door separation point is opened, please carry out step 5 4. For quiescent current values between 200 mA and 1 A: Important: Before pulling out F320 and F304, the tow-away protection and interior protection must be deactivated to prevent an alarm from triggering Lock all doors and hood so that the control unit recognizes the door status as "closed" but the doors are open. Wait until the vehicle has gone to sleep Pull out the fuses one after the other, starting with F323 (PTCU CU/N127), and note down the quiescent current value Perform the same test one at a time if the value is still high for each additional fuse: F119 (PTCU CU/N127), F324 (EIS CU/N73/3), F305 (EIS CU/N73/3), F320 (OCP CU/N70), F304 (OCP CU/N70) If pulling out the fuse reduces the quiescent current to below 50 mA, replace the corresponding control unit. After replacing, please measure and assess the quiescent current again If the quiescent current remains unchanged after the fuses listed above are pulled out, please carry out step 5 5. If the quiescent current remains above 50 mA after all controls have been implemented: Create a TIPS case Document all the completed steps and measurement results Attach the XENTRY Scope trace of the draws that you have seen and identify where certain steps were taken. Attach the latest N73 and N73/3*1 CUL's If the quiescent current is higher than 1 A, the bus keep awake control unit should be identified via the EIS gateway

87 32) may trigger a fault message ("48 V Service Required" with fault codes P0ADA91, P0ADE91, P0AA100, P0ADD00 or P0AA000) in the instrument cluster. This fault message may prevent the 48 V battery contactors from opening automatically if the 12 V power supply is interrupted. In this case, the 48 V on-board electrical system, including connected components, remain energized. Cause The contactors of the 48 V battery do not open, resulting in residual voltage (> 3V) even when the 12 V battery is disconnected. Remedy When working on the 48 V on-board electrical system or connected components, ensure the component being repaired is de-energized in the 48 V system after disconnecting the 12 V ground line. Use a DVOM and ensure that there is less than 3V across the 48V terminals. If the voltage is less than 3V, the repair can be continued in accordance with the WIS documentation. If the voltage is greater than 3V, disconnect the ground line from the 48 V on-board electrical system battery and secure from contacting any ground points of the vehicle before continuing the repair. Once the work has been completed, follow the procedure for clearing the 48 V battery fault message as specified.

One or More PARK Sensor Activations 3. Red Ring Around Vehicle 4. "Active Parking and Parking Assist Inoperative" on Instrument Cluster 5. Cameras 6. Other Park Topics Cause Various root causes Remedy See attached diagnostic guide.

Mercedes me services - activation not possible Notes: - The event code "B16AC00 - The configuration of the SIM card is erroneous" is active and stored - The head unit shows no internet connection Cause The RAMSES module may be faulty. This fault profile can be recognized as follows: With XENTRY Diagnosis, enter the "ACTUAL values" menu of the RAMSES control unit and read out the values with position 175 and 727. ACTUAL values in the event of a fault: Type of mobile service (position 175): No reception Operating mode (position 727): Ready mode Remedy If B16AC00 is permanently active and saved and position 175 is no reception and position 727 is ready mode, it is highly likely that the communication module is faulty. In this case, an initial start up must be carried out. If the problem persists even after an initial start up, please create a TIPS case.

One or More PARK Sensor Activations 3. Red Ring Around Vehicle 4. "Active Parking and Parking Assist Inoperative" on Instrument Cluster 5. Cameras 6. Other Park Topics Cause Various root causes Remedy See attached diagnostic guide.

The following fault codes are stored in the Tailgate Control (HKS) control unit: P1CA000 & B188C2A Cause If the trunk lid is repeatedly opened manually or the vehicle has experienced undervoltage, the trunk lid loses its normalization due to faulty software coding. Remedy For vehicles with a production date up to 01/22/26 (232) or 01/27/26 (192): Update the HKS N121/1 control unit and perform SCN coding. If no new software is available, perform SCN coding. Vehicles with a production date 01/22/2026 (232) or 01/27/2026 (192) and later have already received the correct QNT from the factory.

One or More PARK Sensor Activations 3. Red Ring Around Vehicle 4. "Active Parking and Parking Assist Inoperative" on Instrument Cluster 5. Cameras 6. Other Park Topics Cause Various root causes Remedy See attached diagnostic guide.

There is an implausible signal." In the quick test, there are also no other DTC's in other control units that point to or reference N80 Steering Column Control Module ("SCCM"). There is no effect on any other components or vehicle functions and it does not cause an instrument cluster light. Cause The DTC only ever occurs during initialization (initialization occurs after bus sleep). The SCCM then resets itself. Remedy 1. If the error is stored and no other control unit points to the N80 SCCM ignore and erase. Software expected in Q4 2026. 2.If the DTC is in the N80 SCCM AND the following DTC's are in N30/3 (Electronic Stability Program) and N68 (Electric Power Steering): N30/3 ESP: U071286, Steering column tube module control unit has a malfunction. There is an incorrect signal. N68 EPS: U042986, Implausible data were received from the steering column module. There is an incorrect signal. Please open a TIPS case to the Body/Chassis/Entertainment inbox.

192 Cause Increased quiescent current Remedy 1. Conduct quiescent current measurement. DO NOT USE A DVOM IN LINE - this will blow the fuse in your meter. Use an amp clamp with either a DVOM or XENTRY Scope and wait until the vehicle has gone to sleep (usually takes 6-10 minutes). Once the vehicle is asleep, observe the quiescent current for 10-15 minutes and note down the values. A stable quiescent current should be less than 50 mA. Values higher than this figure are considered not OK (NOK) and require further analysis. 2. If the quiescent current is higher (> 50 to 100 mA): Check whether software updates are available for relevant control units: Door control units (DMD (N69/1), DMP (N69/2), DMRL (N69/3), DMRR (N69/4)), EIS (N73/3), PTCU (N127), OHCM (N70), GW (N73/3*1) After installing the updates: measure the quiescent current again If the quiescent current is < 50 mA, the vehicle is OK If the quiescent current is between 50 and 100 mA, continue with step 5 If the quiescent current is between 100 and 200 mA, continue with step 3 If the quiescent current is between 200 mA and 1 A, continue with step 4 3. For no-load current values of 100 to 200 mA: Lock all doors and hood so that the control unit recognizes the door status as "closed" but the doors are open. Disconnect door separation points (A-pillar connection) when the vehicle is asleep, starting with the driver's side Document the quiescent current value If there is no change: Disconnect the door separation point on the front passenger side and note down the value again If the quiescent current falls below 50 mA after the door separation point is opened, the respective outer door handle must be replaced If the quiescent current drops below 50mA, the draw has been addressed and the vehicle can be released If the quiescent current remains above 50mA after the relevant door handles have been successfully replaced, please create a TIPS case to the LV/HV inbox and retain the removed door handles for the time being If the quiescent current does not change after the door separation point is opened, please carry out step 5 4. For quiescent current values between 200 mA and 1 A: Important: Before pulling out F320 and F304, the tow-away protection and interior protection must be deactivated to prevent an alarm from triggering Lock all doors and hood so that the control unit recognizes the door status as "closed" but the doors are open. Wait until the vehicle has gone to sleep Pull out the fuses one after the other, starting with F323 (PTCU CU/N127), and note down the quiescent current value Perform the same test one at a time if the value is still high for each additional fuse: F119 (PTCU CU/N127), F324 (EIS CU/N73/3), F305 (EIS CU/N73/3), F320 (OCP CU/N70), F304 (OCP CU/N70) If pulling out the fuse reduces the quiescent current to below 50 mA, replace the corresponding control unit. After replacing, please measure and assess the quiescent current again Please create a TIPS case for information purposes If the quiescent current remains unchanged after the fuses listed above are pulled out, please carry out step 5 5. If the quiescent current remains above 50 mA after all controls have been implemented: Create a TIPS case Document all the completed steps and measurement results Attach the XENTRY Scope trace of the draws that you have seen and identify where certain steps were taken. Attach the latest N73 and N73/3*1 CUL's If the quiescent current is higher than 1 A, the bus keep awake control unit should be identified via the EIS gateway

One or More PARK Sensor Activations 3. Red Ring Around Vehicle 4. "Active Parking and Parking Assist Inoperative" on Instrument Cluster 5. Cameras 6. Other Park Topics Cause Various root causes Remedy See attached diagnostic guide.

One or More PARK Sensor Activations 3. Red Ring Around Vehicle 4. "Active Parking and Parking Assist Inoperative" on Instrument Cluster 5. Cameras 6. Other Park Topics Cause Various root causes Remedy See attached diagnostic guide.

One or More PARK Sensor Activations 3. Red Ring Around Vehicle 4. "Active Parking and Parking Assist Inoperative" on Instrument Cluster 5. Cameras 6. Other Park Topics Cause Various root causes Remedy See attached diagnostic guide.

192 Cause Increased quiescent current Remedy 1. Conduct quiescent current measurement. DO NOT USE A DVOM IN LINE - this will blow the fuse in your meter. Use an amp clamp with either a DVOM or XENTRY Scope and wait until the vehicle has gone to sleep (usually takes 6-10 minutes). Once the vehicle is asleep, observe the quiescent current for 10-15 minutes and note down the values. A stable quiescent current should be less than 50 mA. Values higher than this figure are considered not OK (NOK) and require further analysis. 2. If the quiescent current is higher (> 50 to 100 mA): Check whether software updates are available for relevant control units: Door control units (DMD (N69/1), DMP (N69/2), DMRL (N69/3), DMRR (N69/4)), EIS (N73/3), PTCU (N127), OHCM (N70), GW (N73/3*1) After installing the updates: measure the quiescent current again If the quiescent current is < 50 mA, the vehicle is OK If the quiescent current is between 50 and 100 mA, continue with step 5 If the quiescent current is between 100 and 200 mA, continue with step 3 If the quiescent current is between 200 mA and 1 A, continue with step 4 3. For no-load current values of 100 to 200 mA: Lock all doors and hood so that the control unit recognizes the door status as "closed" but the doors are open. Disconnect door separation points (A-pillar connection) when the vehicle is asleep, starting with the driver's side Document the quiescent current value If there is no change: Disconnect the door separation point on the front passenger side and note down the value again If the quiescent current falls below 50 mA after the door separation point is opened, the respective outer door handle must be replaced If the quiescent current remains low after the relevant door handles have been successfully replaced, please create a TIPS case to the LV/HV inbox and retain the removed door handles for the time being If the quiescent current does not change after the door separation point is opened, please carry out step 5 4. For quiescent current values between 200 mA and 1 A: Important: Before pulling out F320 and F304, the tow-away protection and interior protection must be deactivated to prevent an alarm from triggering Lock all doors and hood so that the control unit recognizes the door status as "closed" but the doors are open. Wait until the vehicle has gone to sleep Pull out the fuses one after the other, starting with F323 (PTCU CU/N127), and note down the quiescent current value Perform the same test one at a time if the value is still high for each additional fuse: F119 (PTCU CU/N127), F324 (EIS CU/N73/3), F305 (EIS CU/N73/3), F320 (OCP CU/N70), F304 (OCP CU/N70) If pulling out the fuse reduces the quiescent current to below 50 mA, replace the corresponding control unit. After replacing, please measure and assess the quiescent current again Please create a TIPS case for information purposes If the quiescent current remains unchanged after the fuses listed above are pulled out, please carry out step 5 5. If the quiescent current remains above 50 mA after all controls have been implemented: Create a TIPS case Document all the completed steps and measurement results Attach the XENTRY Scope trace of the draws that you have seen and identify where certain steps were taken. Attach the latest N73 and N73/3*1 CUL's If the quiescent current is higher than 1 A, the bus keep awake control unit should be identified via the EIS gateway

192 Cause Increased quiescent current Remedy 1. Conduct quiescent current measurement. DO NOT USE A DVOM IN LINE - this will blow the fuse in your meter. Use an amp clamp with either a DVOM or XENTRY Scope and wait until the vehicle has gone to sleep (usually takes 6-10 minutes). Once the vehicle is asleep, observe the quiescent current for 10-15 minutes and note down the values. A stable quiescent current should be less than 50 mA. Values higher than this figure are considered not OK (NOK) and require further analysis. 2. If the quiescent current is higher (> 50 to 100 mA): Check whether software updates are available for relevant control units: Door control units (DMD (N69/1), DMP (N69/2), DMRL (N69/3), DMRR (N69/4)), EIS (N73/3), PTCU (N127), OHCM (N70), GW (N73/3*1) After installing the updates: measure the quiescent current again If the quiescent current is < 50 mA, the vehicle is OK If the quiescent current is between 50 and 100 mA, continue with step 5 If the quiescent current is between 100 and 200 mA, continue with step 3 If the quiescent current is between 200 mA and 1 A, continue with step 4 3. For no-load current values of 100 to 200 mA: Lock all doors and hood so that the control unit recognizes the door status as "closed" but the doors are open. Disconnect door separation points (A-pillar connection) when the vehicle is asleep, starting with the driver's side Document the quiescent current value If there is no change: Disconnect the door separation point on the front passenger side and note down the value again If the quiescent current falls below 50 mA after the door separation point is opened, the respective outer door handle must be replaced If the quiescent current remains low after the relevant door handles have been successfully replaced, please create a TIPS case to the LV/HV inbox and retain the removed door handles for the time being If the quiescent current does not change after the door separation point is opened, please carry out step 5 4. For quiescent current values between 200 mA and 1 A: Important: Before pulling out F320 and F304, the tow-away protection and interior protection must be deactivated to prevent an alarm from triggering Lock all doors and hood so that the control unit recognizes the door status as "closed" but the doors are open. Wait until the vehicle has gone to sleep Pull out the fuses one after the other, starting with F323 (PTCU CU/N127), and note down the quiescent current value Perform the same test one at a time if the value is still high for each additional fuse: F119 (PTCU CU/N127), F324 (EIS CU/N73/3), F305 (EIS CU/N73/3), F320 (OCP CU/N70), F304 (OCP CU/N70) If pulling out the fuse reduces the quiescent current to below 50 mA, it must be replaced. After replacing the fuse, please measure and assess the quiescent current again Please create a TIPS case for information purposes If the quiescent current remains unchanged after the fuses listed above are pulled out, please carry out step 5 5. If the quiescent current remains above 50 mA after all controls have been implemented: Create a TIPS case Document all the completed steps and measurement results Attach the XENTRY Scope trace of the draws that you have seen and identify where certain steps were taken. Attach the latest N73 and N73/3*1 CUL's If the quiescent current is higher than 1 A, the bus keep awake control unit should be identified via the EIS gateway

Electronic Ignition Lock control unit coding does not correspond to current series production configuration. As a result, battery management could be affected and cause low battery voltage. A 12V battery message may appear in the instrument cluster after the vehicle has been dormant for an extended period of time. Remedy MBUSA will conduct a service campaign. An authorized Mercedes-Benz dealer will SCN code the Electronic Ignition Lock control unit. The new SCN coding improves battery management, improving the efficiency of the 12V electrical system.

Cause The XENTRY battery tester uses the stored on-board electrical system data in the SAM module to access the health of the 12 volt battery. The XENTRY battery test may not take into account a single discharge event because the SAM or EZS cannot record the data if the battery is discharged. Note: A discharged battery does not necessarily need to be replaced. A discharged battery may be recovered with no permanent damage. Remedy 1) If the battery is discharged, charge the battery. Review WS54.00-P-0037B for minimum charger specifications. Note the amperage difference between trickle (maintainer) chargers of at least 16A and quick chargers of at least 30A. Review AP54.10-P-5449U. Note when battery is sufficiently charged the charger current is less 5A. 2) While charging the battery, analyze the vehicle data to determine root cause of discharge using the following data points: NOTE: For guidance on use of the on-board electrical data please review the AKUBIS video titled "New onboard electrical system diagnosis shown on BR 166". The video can be accessed through WIS by following the path WSM--> content by model series --> passenger cars --> ML-Class --> Model 166 --> group 54 --> New onboard electrical system diagnosis. Refer to the March 2023 PCTT for the video walkthrough of analysis as well as the attachment of the slides to this Li. Review GF54.10-P-1012A regarding what can cause deep discharge protection to not end a battery draw. Review SI54.10-P-0024A for proper maintenance of the vehicle. For Star 2 vehicles: -Review FSAM on-board electrical data conspicuous records NOTE: This data can be found via FSAM N10/6 -> Actual Values -> On-board electrical system -> On-board electrical system data For Star 3 vehicles: -Review N73/3 EZS on-board electrical data conspicuous records NOTE: This data can be found via EZS N73/3 -> Actual Values -> On-board electrical system -> On-board electrical system data 3) Determine if root cause is due to: vehicle technical issue? customer behavior? NOTE: Recommend using battery analysis sheet found in XiW -> Local Contents -> Diagnostic info -> Battery Discharge Worksheet 4) If battery still does not accept charge AND the vehicle does not fall within the parameters of improper maintenance, then create a TIPS case. *IMPORTANT* - If the improper maintenance/use is found during diagnosis, DO NOT open a TIPS case. If a TIPS case is opened, it will be marked 1 star and directed to your assigned FSE for review. TIPS Case must include with the case: Amperage setting of charger and time battery was on charger XENTRY Battery Tester results Voltage of battery taken with multimeter: Do not connect charger while taking measurements N10/6 FSAM, (N73 or N73/3) and (N73*1 or N73/3*1) Workshop analysis of conspicuous data Root cause analysis for battery discharge based on the above documents (technical, customer, etc.) NOTE: For expedited results when creating a case write customer complaint as "XENTRY Battery Tester implausible".

High Voltage Battery (HVB) AC charger software does not correspond to current production specifications. As a consequence, a HVB MIL may illuminate during charging due to fluctuations in power consumption of the charging socket actuator. Remedy MBUSA will conduct a service campaign. An authorized Mercedes-Benz dealer will update the HVB AC Charger Software.

To verify the supplier and software number of the steering column module. See attachment "Supplier Identification" for assistance. Cause MRSM/SCCM flashed to SW A2239028729 Remedy Please send VIN specific ID1 Support Package online using the XENTRY Kit used during the time the error occurred. Then, create an XSS ticket using the Support Tool icon under XENTRY Diagnosis.

our customers, Mercedes-Benz USA is extending the warranty coverage for the Diagnostic Module for Tank Leakage detection (DMTL) on your vehicle from the original New Vehicle Limited Warranty of 4 years / 50,000 miles to 15 years/150,000 miles (whichever occurs first). This applies to the vehicle regardless of ownership.

coding for the electronic ignition lock control unit does not correspond to the latest series production configuration. The electronic ignition lock control unit will be updated to change the logic for locking and unlocking the vehicle via the door handles. To unlock the vehicle, the large outer contact surface of the door handle must be touched. To lock the vehicle, the small, recessed contact surface of the door handle must be touched. MBUSA will conduct an OTA service campaign. Remote software updates are automatically downloaded and installed in the customers vehicle free of charge and do not require a dealer visit.

Cause The XENTRY battery tester uses the stored on-board electrical system data in the SAM module to access the health of the 12 volt battery. The XENTRY battery test may not take into account a single discharge event because the SAM or EZS cannot record the data if the battery is discharged. Note: A discharged battery does not necessarily need to be replaced. A discharged battery may be recovered with no permanent damage. Remedy 1) If the battery is discharged, charge the battery. Review WS54.00-P-0037B for minimum charger specifications. Note the amperage difference between trickle (maintainer) chargers of at least 16A and quick chargers of at least 30A. Review AP54.10-P-5449U. Note when battery is sufficiently charged the charger current is less 5A. 2) While charging the battery, analyze the vehicle data to determine root cause of discharge using the following data points: NOTE: For guidance on use of the on-board electrical data please review the AKUBIS video titled "New onboard electrical system diagnosis shown on BR 166". The video can be accessed through WIS by following the path WSM--> content by model series --> passenger cars --> ML-Class --> Model 166 --> group 54 --> New onboard electrical system diagnosis. Refer to the March 2023 PCTT for the video walkthrough of analysis as well as the attachment of the slides to this Li. For Star 2 vehicles: -Review FSAM on-board electrical data conspicuous records NOTE: This data can be found via FSAM N10/6 -> Actual Values -> On-board electrical system -> On-board electrical system data For Star 3 vehicles: -Review N73/3 EZS on-board electrical data conspicuous records NOTE: This data can be found via EZS N73/3 -> Actual Values -> On-board electrical system -> On-board electrical system data 3) Determine if root cause is due to: vehicle technical issue? customer behavior? NOTE: Recommend using battery analysis sheet found in XiW -> Local Contents -> Diagnostic info -> Battery Discharge Worksheet 4) If battery still does not accept charge, create a TIPS case. -Must include with the case: Amperage setting of charger and time battery was on charger XENTRY Battery Tester results Voltage of battery taken with multimeter: Do not connect charger while taking measurements N10/6 FSAM and N73/3 EZS CUL Workshop analysis of conspicuous data Root cause analysis for battery discharge based on the above documents (technical, customer, etc.) NOTE: For expedited results when creating a case write customer complaint as "XENTRY Battery Tester implausible".

"Active Emergency Stop Assist not available" "Active Lane Keeping Assist not available" Cause Possible causes: the hand detection mat, the hand detection control unit, the contacts and the steering wheel harness. Remedy In the event of a customer complaint and fault code in IDC control unit: U186B29 in IDC223 or fault code U0429E0, U042941, U042929, U042902, U0429E1 in IDC213 or fault code in HOSWD control unit: B1E7614 Test: Please perform the new SCN coding for HOSWD control unit (N179/1) (available since May 2025). Please flash the IDC (N62/4) software A223 902 75 37 (only applies to HOSWD223). Erase fault memory Remedy: Switch on ignition without touching the steering wheel. If after 10 seconds without touching the steering wheel, one of the two fault messages appears in the IC: Please check contacts and feed lines in the steering wheel by means of visual inspection for damage, crimped connections, loose connections, etc. (example in picture 2 and 3). If there is visible damage -> replace steering wheel electronics or feed lines. If there is no visible damage -> Please create TIPS case! If no yellow message appears in the instrument cluster within 10 seconds: Please grab the steering wheel all the way round, including the 6 o'clock chrome molding, with both hands (see picture 1). If the fault is triggered by grabbing the steering wheel rim or pressing on the 6 o'clock clasp, check contacts and feed lines in the steering wheel by means of visual inspection for damage, crimped connections, loose connections, etc. (example in picture 2 and 3). Check ground connections (screw connections and cable to steering wheel rim); if necessary tighten screws/bolts and check for corrosion (Picture 4). If there is visible damage -> replace steering wheel electronics or feed lines. If no fault is visible: Please open a TIPS case! In the event of a customer complaint and further fault code in HOSWD: B1E7713: Check ground connections (screw connections and cable to steering wheel rim); if necessary tighten screws/bolts and check for corrosion (Picture 4). B1F1F04: Check hand detection system control unit; if necessary swap with donor vehicle (ensure that the HW part numbers are identical).

"Active Emergency Stop Assist not available" "Active Lane Keeping Assist not available" Cause Possible causes: the hand detection mat, the hand detection control unit, the contacts and the steering wheel harness. Remedy Test Procedure: Perform an initial quick test with freeze frame data. Save the N179 - Hand detection system (HE) and N62/4 - Driver assistance system (SG-FAS) control unit logs. Note the fault frequency of fault codes set. Delete the N179 and N62/4 fault memory. Test: Please flash the IDC (N62/4) software A223 902 75 37 (only applies to HOSWD223). Erase fault memory Reset the HOSWD control unit in line with the guided test in Xentry. Using both hands, "scan" the steering wheel all the way round, including the chrome molding at 6 o'clock (see Picture 1). Read out fault memory and follow steps below for any faults set. Remedy: Switch on ignition without touching the steering wheel. If after 10 seconds without touching the steering wheel, one of the two fault messages appears in the IC: Please check contacts and feed lines in the steering wheel by means of visual inspection for damage, crimped connections, loose connections, etc. (example in picture 2 and 3). If there is visible damage -> replace steering wheel electronics or feed lines. If there is no visible damage -> replace steering wheel rim. If no yellow message appears in the instrument cluster within 10 seconds: Please grab the steering wheel all the way round, including the 6 o'clock chrome molding, with both hands (see picture 1). If the fault is triggered by grabbing the steering wheel rim or pressing on the 6 o'clock clasp, check contacts and feed lines in the steering wheel by means of visual inspection for damage, crimped connections, loose connections, etc. (example in picture 2 and 3). Check ground connections (screw connections and cable to steering wheel rim); if necessary tighten screws/bolts and check for corrosion (Picture 4). If there is visible damage -> replace steering wheel electronics or feed lines. If no defect is visible: Please do not replace the steering wheel, but wait for new coding parameters which should be available 05/2025. Vehicles with control unit N179 - Hand detection system (HE): B1E7614: Check contacts and wiring harness in steering wheel by carrying out a visual check for damage, pinched areas, loose connections, etc. (examples in Figs. 2 and 3); If no damage is noted replace the N135 - Steering wheel electronics (LRE) and reassess. If fault code returns replace the steering wheel. B1E7713: Please check the wires and connections in the steering wheel. Afterwards, please check whether the complaint is caused by over torqued screws on steering wheel trim pieces. To do this, please loosen the screws slightly and reevaluate the situation. (Picture 4). P164456: Perform SCN coding. P1CA000: Perform an initial start-up on the N179 hand detection control unit. Faults in N62/4 - Driver assistance system (SG-FAS) control unit with U186B29, U0429E0, U042941, U042929, U042902, U0429E1: If no fault is stored in the N179 control unit: Scan steering wheel as indicated in the test procedure and check whether the fault is reproducible. If no fault code is stored in the hand detection control unit, the fault codes in the driver assistance systems control unit are precautionary messages. Software for the N62/4 - Driver assistance system (SG-FAS) is now available for Star 3 vehicles only. Fault in IDC223 control unit: U186B29: Delete fault memory and flash the new IDC (N62/4) software A223 902 75 37. If the software update is not available, or the problem persists, create a TIPS case. Fault in IDC213 control unit: U0429E0, U042941, U042929, U042902, U0429E1: If no fault is stored in the HOSWD control unit then scan the steering wheel and check whether the fault is reproducible. If reproducible: Create a TIPS case, adding the

Cause Temperature sensor in overhead control panel (OCP) delivering incorrect values: The temperature sensor in the overhead control panel is malfunctioning. Fault code B110709 or fault code B11F697 are present in the overhead control panel with the status (active) or (active stored). or The temperature sensor in the overhead control panel measures an incorrect temperature (the temperature value can be checked against the actual value in the overhead control panel) If the above-mentioned fault code is not present, the cause could be malfunction on the air conditioning system. Remedy If one of the above-mentioned fault codes should occur, a TIPS case must be created here. If the above fault codes or actual value differences are present in the OCP - please send the case to the Body/Chassis/ Entertainment inbox. Otherwise, the case must be sent to the HV/LV inbox for support in A/C diagnosis. *** It is not necessary to replace the overhead control panel ***

Commonly used acronyms in LI's and TIPS cases. Control unit names, numbers, and how to identify. Network/wiring architecture groups to baumuster quick reference. Platform to baumuster quick reference. Cause Information only Remedy Acronyms: AV = Actual Values CU = Control Unit CUL = Control Unit Log DTC = Diagnostic Trouble Code E-Stand = Fresh-up head unit boot software (found in head unit control unit log) FUP = Fresh-up FW = Firmware HSVL = High Speed Video Line HU = Head Unit HW = Hardware ISU = Initial Start Up LVDS = Low Voltage Differential Signal NSFT = Not Safe For Transport MOPF = Model Facelift (Ex: 167 MOPF) PiH = Plug-in Hybrid P3 Hybrid = AMG Plug-in Hybrid with rear drive unit SA Code = Sonderausstattungscode (Option Code) SCN = Software Calibration Number SW = Software TCU = Telecommunication Control Unit (Hermes/Ramses/Etc...) QT = Quicktest XD = XENTRY Diagnosis Control Unit Identification: Refer to the attachment "Control Unit Nomenclature" for location of each. Control Unit Name Control Unit Number Control Unit Short name Control Unit Diogenes ("dy-oj-uh-neez") name - Control unit variant/family. Network/Wiring Architecture to Baumuster Quick Reference: Star 1 117, 156, 246 (MFA) 166, 176, 221, 242, 246, 292 Star 2 205, 213, 238, 253, 257, 290 (MRA) 117, 156, 246 (MFA) 118, 177, 243, 247 (MFA2) 167, 222, 292, 463, 465, 906 Star 3 294, 295, 296, 297 (EVA2) 206, 214, 223, 236, 254 (MRA2) 192 and 232 (MSA) 907 Platform to Baumuster Quick Reference: MRA = "Mercedes-Benz Rearwheel Architecture": 205 213 222 238 253 257 290 MRA2 = "Mercedes-Benz Rearwheel Architecture - Generation 2": 206 214 223 236 254 MFA = "Mercedes-Benz Frontwheel Architecture" 117 156 246 MFA2 = "Mercedes-Benz Frontwheel Architecture - Generation 2" 118 177 243 247 EVA1.5 = "Electric Vehicle Architecture" 243 EVA2 = "Electric Vehicle Architecture - Generation 2" 294 295 296 297 MSA = "Mercedes-Benz Sport Architecture" 192 232 MMA = "Mercedes-Benz Modular Architecture" No vehicles currently launched.

"Active Emergency Stop Assist not available" "Active Lane Keeping Assist not available" Cause Possible causes: the hand detection mat, the hand detection control unit, the contacts and the steering wheel harness. Remedy Test Procedure: Perform an initial quick test with freeze frame data. Save the N179 - Hand detection system (HE) and N62/4 - Driver assistance system (SG-FAS) control unit logs. Note the fault frequency of fault codes set. Delete the N179 and N62/4 fault memory. Using both hands, "scan" the steering wheel all the way round, including the chrome molding at 6 o'clock (see Picture 1). Read out fault memory and follow steps below for any faults set. Remedy: Vehicles with control unit N179 - Hand detection system (HE): B1E7614: Check contacts and wiring harness in steering wheel by carrying out a visual check for damage, pinched areas, loose connections, etc. (examples in Figs. 2 and 3); If no damage is noted replace the N135 - Steering wheel electronics (LRE) and reassess. If fault code returns replace the steering wheel. B1E7713: Please check the wires and connections in the steering wheel. Afterwards, please check whether the complaint is caused by over torqued screws on steering wheel trim pieces. To do this, please loosen the screws slightly and reevaluate the situation. (Picture 4). P164456: Perform SCN coding. P1CA000: Perform an initial start-up on the N179 hand detection control unit. Faults in N62/4 - Driver assistance system (SG-FAS) control unit with U186B29, U0429E0, U042941, U042929, U042902, U0429E1: If no fault is stored in the N179 control unit: Scan steering wheel as indicated in the test procedure and check whether the fault is reproducible. If no fault code is stored in the hand detection control unit, the fault codes in the driver assistance systems control unit are precautionary messages. Software for the N62/4 - Driver assistance system (SG-FAS) is now available for Star 3 vehicles only. Fault in IDC223 control unit: U186B29: Delete fault memory and flash the new IDC (N62/4) software A223 902 75 37. If the software update is not available, or the problem persists, create a TIPS case. Fault in IDC213 control unit: U0429E0, U042941, U042929, U042902, U0429E1: If no fault is stored in the HOSWD control unit then scan the steering wheel and check whether the fault is reproducible. If reproducible: Create a TIPS case, adding the note "reproducible". If no fault code is stored in the hand detection control unit, the fault codes in the driver assistance systems control unit are precautionary messages. New coding parameters (SCN) will be available in Q2/2025 for the HOSWD control unit.

low beam) appear in the instrument cluster (picture in attachment), even though the same digital light settings are stored in all MBUX profiles Note: The pop-up messages are intended to indicate different settings when changing MBUX profiles Cause - ECU software Remedy - Reset MBUX to manufacturer default settings. Software update available as of December 2024. - A26/17 - MBUX multimedia system (head unit)

"Active Emergency Stop Assist not available" "Active Lane Keeping Assist not available" Cause Possible causes: the hand detection mat, the hand detection control unit, the contacts and the steering wheel harness. Remedy Test Procedure: Perform an initial quick test with freeze frame data. Save the N179 - Hand detection system (HE) and N62/4 - Driver assistance system (SG-FAS) control unit logs. Note the fault frequency of fault codes set. Delete the N179 and N62/4 fault memory. Using both hands, "scan" the steering wheel all the way round, including the chrome molding at 6 o'clock (see Picture 1). Read out fault memory and follow steps below for any faults set. Remedy: Vehicles with control unit N179 - Hand detection system (HE): B1E7614: Check contacts and wiring harness in steering wheel by carrying out a visual check for damage, pinched areas, loose connections, etc. (examples in Figs. 2 and 3); If no damage is noted replace the N135 - Steering wheel electronics (LRE) and reassess. If fault code returns replace the steering wheel. B1E7713: Please check the wires and connections in the steering wheel. Afterwards, please check whether the complaint is caused by over torqued screws on steering wheel trim pieces. To do this, please loosen the screws slightly and reevaluate the situation. (Picture 4). P164456: Perform SCN coding. P1CA000: Perform an initial start-up on the N179 hand detection control unit. Faults in N62/4 - Driver assistance system (SG-FAS) control unit with U186B29, U0429E0, U042941, U042929, U042902, U0429E1: If no fault is stored in the N179 control unit: Scan steering wheel as indicated in the test procedure and check whether the fault is reproducible. If no fault code is stored in the hand detection control unit, the fault codes in the driver assistance systems control unit are precautionary messages. Software for the N62/4 - Driver assistance system (SG-FAS) is now available for Star 3 vehicles only. Fault in IDC223 control unit: U186B29: Delete fault memory and flash the new IDC (N62/4) software A223 902 75 37. If the software update is not available, or the problem persists, create a TIPS case.

platform), EQE (294 and 296 platform), EQS (295 and 297 platform), GLC (254 platform), AMG GT (192 platform), S-Class (223 platform), and AMG SL (232 platform) vehicles, the communication module software does not correspond with the latest series production configuration. The communication module will receive an OTA software update that includes product improvements. MBUSA will conduct an OTA service campaign. Remote software updates are automatically downloaded and installed in the customers vehicle free of charge and do not require a dealer visit. All customers will be mailed a letter informing them of this software update.

platform) vehicles, the routing of the 12V battery ground cable may not correspond to current production specifications. In this case, it is possible the ground connection may loosen over time. Should the ground connection loosen, the possibility exists that the convertible soft top may become inoperable, or a "12V battery, voltage too low" message may appear in the instrument cluster. MBUSA will conduct a service campaign. An authorized Mercedes-Benz dealer will check the routing of the 12V battery ground cable and rework it if necessary.

low beam) appear in the instrument cluster (picture in attachment), even though the same digital light settings are stored in all MBUX profiles Note: The pop-up messages are intended to indicate different settings when changing MBUX profiles Cause - ECU software error Remedy - Reset MBUX to manufacturer default settings. Software update expected to be available YoM24/2 (Year of Modification - Code can be found in VeDoc): - A26/17 - MBUX multimedia system (head unit) -This document will be updated when the software is available.

"Active Emergency Stop Assist not available" "Active Lane Keeping Assist not available" Cause Possible causes: the hand detection mat, the hand detection control unit, the contacts and the steering wheel harness. Remedy Test Procedure: Perform an initial quick test with freeze frame data. Save the N179 - Hand detection system (HE) and N62/4 - Driver assistance system (SG-FAS) control unit logs. Note the fault frequency of fault codes set. Delete the N179 and N62/4 fault memory. Using both hands, "scan" the steering wheel all the way round, including the chrome molding at 6 o'clock (see Picture 1). Read out fault memory and follow steps below for any faults set. Remedy: Vehicles with control unit N179 - Hand detection system (HE): B1E7614: Check contacts and wiring harness in steering wheel by carrying out a visual check for damage, pinched areas, loose connections, etc. (examples in Figs. 2 and 3); If no damage is noted replace the N135 - Steering wheel electronics (LRE) and reassess. If fault code returns replace the steering wheel. Please check the wires and connections in the steering wheel. Afterwards, please check whether the complaint is caused by over torqued screws on steering wheel trim pieces. To do this, please loosen the screws slightly and reevaluate the situation. (Picture 4). P164456: Perform SCN coding. P1CA000: Perform an initial start-up on the N179 hand detection control unit. Faults in N62/4 - Driver assistance system (SG-FAS) control unit with U186B29, U0429E0, U042941, U042929, U042902, U0429E1: If no fault is stored in the N179 control unit: Scan steering wheel as indicated in the test procedure and check whether the fault is reproducible. If no fault code is stored in the hand detection control unit, the fault codes in the driver assistance systems control unit are precautionary messages. Software for the N62/4 - Driver assistance system (SG-FAS) is in preparation to reduce erroneous messages in the driver display.

platform) vehicles, the routing of the 12V battery ground cable may not correspond to current production specifications. In this case, it is possible the ground connection may loosen over time. Should the ground connection loosen, the possibility exists that the convertible soft top may become inoperable, or a "12V battery, voltage too low" message may appear in the instrument cluster.

Remedy Follow guided test for U116000, if present, and perform the requested SW updates. (Refer to Li54.10-P-076896). If U116000 is not present or after the SW updates have been performed, update the SCN coding of the EZS. After, lock the vehicle and place the key >25 ft. away from the vehicle. Once the vehicle is in sleep mode, approach the vehicle with the key and verify that the key is not acknowledged (door handles extend) until roughly 13ft. from the vehicle. Once confirmed, faults can be cleared and vehicle released. *Note - Ensure the 12V battery is fully charged before releasing the vehicle to the customer. Performing the test after SCN coding in the shop, may present an amplification factor and the key will still be recognized further than 13 ft. away. If this is the case, move the vehicle outside.

GLC, S-Class, SL (206, 294, 295, 296, 297, 254, 223, 232 platform) vehicles, the communication module software does not correspond with the latest series production configuration. The communication module will receive an OTA software update that includes product improvements. MBUSA will conduct an OTA service campaign. Remote software updates are automatically downloaded and installed in the customers vehicle free of charge and do not require a dealer visit. No customer letter will be mailed for this OTA software update.

6,055 Model Year (MY) 2022-2023 SL (232 platform) vehicles. The vehicles will be visible and flagged in VMI as OPEN on May 3, 2024.Mercedes-Benz AG, the manufacturer of Mercedes-Benz vehicles, has determined that on certain MY 2022-2023 SL (232 platform) vehicles, premature or unwanted smartkey recognition could slowly discharge the 12V battery. MBUSA will conduct a service campaign. An authorized Mercedes-Benz dealer will update the SCN coding in the EIS on-board electrical system.

to the following possible connection problems: Remote status: The time stamp of the last update that is displayed on the side of the sheet with the vehicle status contains the wrong information. Geofence: Geofence notifications are not sent if vtime is invalid. Programming of charging settings: The update timestamp on the side of the sheet with the loading settings features an incorrect timestamp. The timestamp for the end of the charging process would contain the wrong information. The status and end of the charging process are not displayed. The function itself is not affected; only the timestamps are incorrect. Pre-entry climate control: The time stamp of the last update that is displayed on the side of the sheet with the vehicle status contains the wrong information. The next departure time would be affected. The function itself is not affected; only the timestamps are incorrect. NOTE: The functionality of the eCall system is not affected. RAMSES 1.1 software E139.4. Perform a SW update of the RAMSES 1.1 module to the latest E139.5 software.

The change will become active on 3/1/2024. Updated login procedure to simplify activation of services To activate the toll system control unit, a service activation must be implemented by the customer for the payment method (credit card information) to be transmitted to the service provider and their terms and conditions to be accepted. Previously, the activation process took place via the Toll Service app in the head unit. In future, the service activation will instead take place via the website of the Payviam service provider. (Figure 1) For a duration, the Toll Service app will provide a link to the service activation page via URL text and via QR code: (Figure 2) URL: https://www.payviam.com/MB QR code: see attachment Additional information: - Between 24 - 48 hours after the registration of the service, the service will be operational and the system will be able to be used. - UI operation in the vehicle settings: -UID serial number is the number that is required for the activation of the service (Figure 3) -Number of passengers - is determined automatically: In California, the toll amounts depend on the number of passengers. If this option is activated, this is automatically taken into account by the system by means of belt and weight sensors.

therefore the following possible connectivity issues: Remote Status: The last updated timestamp shown in vehicle status leaf page will have the wrong information. Geofence: Geofence notifications will not be sent when vtime is invalid. Programming of Charge Settings: Updated timestamp in charge settings leaf page will have wrong timestamp. End of charging timestamp would have the wrong information. Status and end of charging are not displayed. Function itself is not affected, only the timestamps are wrong. Pre Entry Climate Control: The last updated timestamp shown in vehicle status leaf page will have the wrong information. Next departure time would be impacted. Function itself is not affected, only the timestamps are wrong. Software-Bug in RAMSES 1.1 Software E139.4. A fix for this issue will be implemented in the next coming RAMSES 1.1 SW E139.5 early 2024.

The rear spoiler can then no longer be actuated manually using the button. The function of the rear spoiler is re-established after an ignition reset and the fault message is no longer present in the instrument cluster. Software of the AMG DRIVE UNIT. Remedy Valid for all vehicles of model series 232 with M177 (SL55/63) from start of production - end of modification year 22/1 - manufacturing date before April 21, 2023: --> Perform software update of the AMG DRIVE UNIT N145/1 to A 001 902 49 02. All vehicles of model series 232 with M177 (SL55/63) from start of modification year 22/2 - manufacturing date on/after April 21, 2023: --> Perform software update of the AMG DRIVE UNIT N145/1 to A 000 902 61 96. Valid for all vehicles of model series 232 with M139L (SL43) from start of modification year 22/1 - manufacturing date on/after April 21, 2023: --> Perform software update of the AMG DRIVE UNIT N145/1 to A 000 902 61 96.

platform) vehicles, after a longer nonoperational time of greater than 42 days or with a battery charge of less than 45%, the following battery fault message might display in the instrument cluster: Stop Vehicle See Operator's Manual, Switch on vehicle to charge the 12V battery, or Stop vehicle To charge the12 V battery do not switch off vehicle. MBUSA will conduct a service campaign. As a customer convenience measure, an authorized Mercedes-Benz dealer will place a trickle charger in the vehicles trunk.

platform) vehicles, after a longer nonoperational time of greater than 42 days or with a battery charge of less than 45%, the following battery fault message might display in the instrument cluster: "Stop Vehicle See Operator's Manual, Switch on vehicle to charge the 12 V battery, or Stop vehicle To charge the 12 V battery do not switch off vehicle." MBUSA will conduct a service campaign. An authorized Mercedes-Benz dealer will rework the connector assignment in the trunk fuse and relay module to make the vehicle ready for an external charger in cases of prolonged non-operational use.

In such cases, "Playback not active" is shown in the display. Mute line between communication module N112/2 and sound control unit N40/3. Check mute cable (violet) between control units for communication module N112/2 and sound N40/3, including plug contacts, and repair or replace as necessary. If the plug contact is deformed, it is imperative that its counterpart at the control unit is also checked.

Under analysis. Check which area of the steering column the noises occur in. Do the noises tend to occur at the bottom in the driver footwell or do they tend to occur in the area of the steering column switch module (MRSM/SCCM)? If the noises occur in the area of the MRSM/SCCM, work through the following points: - Loosen screws of the MRSM/SCCM and steering wheel, re-align the MRSM/SCCM, and re-fasten the screws (see WIS). Sometimes there is stress at the MRSM/SCCM and noises occur. - If noises continue to occur, swap the MRSM/SCCM into a vehicle without any (noise) complaints. - If the noises occur with the MRSM/SCCM complained about when it is in the vehicle without a complaint (donor vehicle), the MRSM/SCCM can be replaced. - If noises also occur in the customer vehicle with the MRSM/SCCM from the reference vehicle, the MRSM/SCCM is not the cause and must not be replaced. Notes: - When installing the MRSM/SCCM, make sure that no damage occurs! - Only disassemble and mount all component parts in the "straight-ahead position" (see also WIS). - Please refer to this LI in the "Notes" section of the warranty claim!

steering maneuvers See example file in the attachments area: Lenkrad-Schleifgerusch_SteeringWheel-GrindingNoises.mp4 The plastic cover on the back of the steering wheel is not positioned correctly and may therefore rub against the steering column switch module Please use the following noise files for the damaged part analysis: 1. Grinding noise | pot. cause: steering wheel | see attachment: Lenkrad-Schleifgerusch_SteeringWheel-GrindingNoises. mp4 2. Creaking/cracking noise | pot. cause: steering column switch module | see attachment: MRSM-Schleifgerusch_ SCCM-GrindingNoises.MOV If the noise is due to the steering column switch module, please use LI46.10-P-077314. Check for grinding areas on the steering wheel: Please check the covers on the rear for protrusion and, if necessary, remount. 1. Mask off openings on back of steering wheel with adhesive tape 1. Mark the back of the steering wheel with colored chalk (see Picture 1) 2. Mount steering wheel on steering column switch module and turn the steering wheel from left lock to right lock ten times. 3. The chalk will now have disappeared in the areas where there is rubbing (see Picture 2) Warning: Ensure that no cables and visible areas of the steering wheel are damaged. The abrasive excess material on the back of the steering wheel must be carefully removed with a Dremel tool. Tip: You will need to remove approx. 0.1 mm to 0.3 mm of material (example: Picture 3) Make sure that none of the ground-off material gets into the steering wheel. After removing the material, clean the entire back of the steering wheel with a 1% soap solution.

Mercedes me services - activation not possible. Notes: - In the quick test, no fault code and no event code is stored in the RAMSES control unit (N112/2). The SIM card may be defective. A defective SIM card can be identified as follows: With XENTRY Diagnosis, open the "ACTUAL values" menu of the RAMSES control unit and read out the values for "EUICC, ICCID, IMEI, IMSI". ACTUAL values in the event of a defect: 1. EUICC:null 2. ICCID: null 3. IMEI: null 4. IMSI: null If all the values for "EUICC, ICCID, IMEI, IMSI" = null, then it is highly likely that the SIM card inside the RAMSES control unit is defective. Recommissioning the RAMSES control unit may rectify the problem. If the problem is still present after the recommissioning, then the RAMSES control unit must be replaced. In this case, please create a TIPS case and forward it to HQ. The part is required for analysis. Information on the return delivery of the module will be communicated via TIPS case.

platform) vehicles, after a longer nonoperational time of greater than 42 days or with a battery charge of less than 45%, the following battery fault message might display in the instrument cluster: Stop Vehicle See Operator's Manual, Switch on vehicle to charge the 12 V battery, or Stop vehicle To charge the12 V battery do not switch off vehicle. MBUSA will conduct a service campaign. An authorized Mercedes-Benz dealer will rework the connector assignment in the trunk fuse and relay module to make the vehicle ready for an external charger in cases of prolonged non-operational use.

platform) vehicles, after a longer non-operational time of greater than 42 days or with a battery charge of less than 45%, the following battery fault message might display in the instrument cluster: Stop Vehicle See Operator's Manual, Switch on vehicle to charge the 12V battery, or Stop vehicle To charge the12 V battery do not switch off vehicle. MBUSA will conduct a service campaign. As a customer convenience measure, an authorized Mercedes-Benz dealer will place a trickle charger in the vehicles trunk.

EQS, S-Class, SL, EQE, GLC (206, 296, 297, 223, 232, 294, 295, 254 platform) vehicles, the head unit software will be updated remotely to MBUX 2.4. With this update, customers will benefit from many new functions and features, such as video streaming (note that the Entertainment Package Plus is required for streaming and can be purchased from the Mercedes me Store by the end of 2023), Dolby Atmos, MBUX Voice Assistant (NewsFlash & Tourguide), a personal decorative image on the front passenger display, and more. Please see NCU issued on September 5th, 2023 from Product Management and Digital House team Additional New Connected Features Coming Soon. MBUSA will conduct an OTA service campaign. Remote software updates are automatically downloaded and installed in the customers vehicle free of charge without an additional workshop visit via the data link of the communication module. No customer letter will be mailed for this software update.

platform) vehicles, the software for the rear spoiler control unit does not meet current production specifications. In this case, a fault message Rear spoiler nonfunctional may appear in the instrument cluster and the rear spoiler will not retract or extend until the next ignition cycle. MBUSA will conduct a service campaign. An authorized Mercedes-Benz dealer will update the software for the rear spoiler.

C-Class, EQE, EQE SUV, EQS, EQS SUV, GLC, GLE and S-Class (206, 295, 294, 297, 296, 254, 167 and 223 platform) vehicles, the communication module software does not correspond with the latest series production configuration. The update is free of charge and will be carried out in the background. The installation will eliminate software errors for a better entertainment experience. The update will show after the ignition has been cycled. MBUSA will conduct an OTA service campaign. A workshop visit for the customer is not required since remote software updates are automatically downloaded and installed in the customers vehicle. The OTA may be validated as successful on the customers Mercedes Me connect app under Over-the-Air Vehicle Updates as Update for the communication module. If the OTA is successful it will show a green installed and date of installation in the Over-the-Air update section.

The rear spoiler can then no longer be actuated manually using the button. The function of the rear spoiler is re-established after an ignition reset and the fault message is no longer present in the instrument cluster. Software of the AMG DRIVE UNIT. All vehicles of model series 232 with M177 (SL55/63) from start of production - end of modification year 22/1 - manufacturing date before April 21, 2023: --> Perform software update of the AMG DRIVE UNIT N145/1 to Latest SW Available. All vehicles of model series 232 with M177 (SL55/63) from start of modification year 22/2 - manufacturing date on/after April 21, 2023: --> Perform SCN coding of the AMG DRIVE UNIT N145/1. Valid for all vehicles of model series 232 with M139L (SL43) from start of modification year 22/1 - manufacturing date on/after April 21, 2023: --> Perform SCN coding of the AMG DRIVE UNIT N145/1.All vehicles of model series 232 with M177 (SL55/63) from start of production - end of modification year 22/1 - manufacturing date before April 21, 2023: --> Perform software update of the AMG DRIVE UNIT N145/1 to Latest SW Available. All vehicles of model series 232 with M177 (SL55/63) from start of modification year 22/2 - manufacturing date on/after April 21, 2023: --> Perform SCN coding of the AMG DRIVE UNIT N145/1. Valid for all vehicles of model series 232 with M139L (SL43) from start of modification year 22/1 - manufacturing date on/after April 21, 2023: --> Perform SCN coding of the AMG DRIVE UNIT N145/1.

The rear spoiler can then no longer be actuated manually using the button. The function of the rear spoiler is re-established after an ignition reset and the fault message is no longer present in the instrument cluster. Software of the AMG DRIVE UNIT. Remedy valid for all vehicles of model series 232 with software A 000 902 16 90 on control unit N145/1 AMG Drive Unit and up to and including manufacturing date May 31, 2023

Cause The XENTRY battery tester uses the stored on-board electrical system data in the SAM module to access the health of the 12 volt battery. The XENTRY battery test may not take into account a single discharge event because the SAM cannot record the data if the battery is discharged. Note: A discharged battery does not necessarily need to be replaced. A discharged battery may be recovered with no permanent damage. Remedy Follow guided tests as described.

Cause Frictional vibrations Remedy The intent of this document is to reduce noise from high performance AMG brakes. AMG brakes are designed for performance under high load and in certain scenarios, can emit noise. Some scenarios are normal and some are induced by driving style like those listed below: Driving style such as two footed driving where the pad might be in constant contact with the rotor. Brake pressure and application style (stopandgo traffic with consistent light brake pressure riding brakes where the brakes cannot cool sufficiently between applications). This can cause the brake pads to glaze and have a smooth/glassy surface which can induce noise. When ambient temperatures rise during summer peak and during cooling and cold winter months. 1. Beginning Diagnostics: a) Check whether the complaint can be reproduced and at which axle or side the noises occur (ideally together with the customer while driving). b) Check the affected system for component wear, mechanical damage or localized overheating damage. Replace damaged components as necessary. c) Assess condition of brake rotors and pads per WIS and visually (i.e. long periods of stagnation, etc...). d) Clean brake components free of brake dust and debris. d) Secure vehicle on a lift. 1. Start the engine and depress the brake pedal 34 times. 2. Check each wheel to see if they turn freely by hand. 3. If a wheel is not turning freely by hand, this needs to be addressed prior to reassessing the noise concern. e) Check whether, apart from this document, an additional document exists for the specific model in question, and if so, work through it and then continue. 2. Specific Axle Work: NOTE: If the brake pad has a metal backing plate, there is no need to affix the adhesive film. Continue with applying chamfer and Molykote as instructed below. IMPORTANT: Be absolutely certain to not allow paste between friction surfaces of the pad and disc! a) If the noises are coming from the front axle. 1. Remove brake linings of front axle. 2. Clean all contact points on brake lining backing plate, including the brake lining guide pins and brake caliper/carrier. 3. Clean bonding surface (where pistons contact back of brake pad). Apply adhesive film to the backplate of the pistonside brake lining where the piston contacts the pad backing plate. See picture "Adhesive and Paste Application Area". 4. Be sure to remove both brown paper backing sides of the adhesive film, it is double sided adhesive film. 5. If adhesive is already installed on backing plate where pistons contact the back of the pad, you may gently scrape off and reapply a new adhesive or Molykote. Must not apply the Molykote on top of the adhesive. 6. Chamfer edges (gently round off sharp leading edges) on brake pads. Some pads have vertical grooves, these can be gently chamfered with a triangular file as well. See picture "Chamfering Technique". 7. Apply Molykote to the sides of the backing plate. See picture "Adhesive and Paste Application Area". 8. After installing the brake linings, actuate the brake for 30 seconds. b) If the noises are coming from the rear axle. 1. Remove brake pads of rear axle. 2. Clean all contact points on brake lining backing plate and brake caliper /carrier. 3. Clean bonding surface (where pistons contact back of brake pad). Apply adhesive film to the backplate of the pistonside brake lining. 4. Chamfer edges (round off sharp leading edges) on brake pads. See picture "Chamfering Technique". 5. Grease contact points (red areas on attachment "Rear Pad Grease Area") between brake lining and guide of brake caliper with Molykote. 3. Brake Bedding Process: a) Before trip, the mileage incurred must be clarified with the customer (approx. 30 miles). b) Select a suitable route so speeds of approximately 65 MPH can be achieved. c) If the vehicle is an AMG P3 Hybrid, switch off

enhance the satisfaction of our customers, Mercedes-Benz USA is extending the warranty coverage for the Diagnostic Module for Tank Leakage Detection ("DMTL") on your vehicle from the original New Vehicle Limited Warranty of 4 years / 50,000 miles to 15 years/150,000 miles (whichever occurs first). This applies to the vehicle regardless of ownership. Why the Warranty extension? On certain Model Year 2018 - 2024 A / C / CLA / CLS / E / G / GLA / GLB / GLC / GLE / GLS / GT / S / SL Mercedes-Benz vehicles, under certain circumstances, the DMTL may trigger erroneous Diagnostic Trouble Code ("DTC") entries that may result in the illumination of the Check Engine Malfunction Indicator Lamp ("MIL"). Any repairs under this warranty extension must be performed by an authorized Mercedes-Benz dealership. If your preferred authorized Mercedes-Benz dealership performs a diagnosis and confirms that your vehicle has the issue, the repair will be covered under this extended warranty and performed at no cost to you. This extended warranty does not apply to any other components or conditions beyond the ones mentioned above, and standard warranty terms apply, including the exclusions with respect to extra expenses, as identified in the Service and Warranty Information booklet.

In our continuing efforts to ensure the proper performance of Mercedes-Benz products and to enhance the satisfaction of our customers, Mercedes-Benz USA, LLC (MBUSA) is extending the warranty coverage on the Diagnostic Module for Tank Leakage detection (DMTL) in certain Model Year (MY) vehicles listed below from the original New Vehicle Limited Warranty of 4 years/50,000 miles to 10 years/120,000 miles (vehicles certified as LEV II) and 15 years/150,000 miles (vehicles certified as LEV III), whichever occurs first, for the following condition: Under certain circumstances, the DMTL may trigger erroneous Diagnostic Trouble Code (DTC) entries that may result in the illumination of the Check Engine Malfunction Indicator Lamp (MIL).

Cause Fogging of the headlamps is a natural phenomenon, which can occur under certain climatic conditions. It does not lead to any technical impairment of the headlamp. If a pressure compensation diaphragm is fitted in the housing cover, then the lamp unit is a "closed system". Remedy Headlamp: Remedy 1 Clearing fogged/condensed LED headlamps: 1. Drive vehicle into workshop (temperature higher than +18 C/+64.4 F) and connect the exhaust extraction. Note: Do not perform an engine wash before the defogging test. 2. Switch off the engine and connect battery support via a charger. 3. Open the hood. 4. Switch on the lights. 5. Leave the vehicle in this state for 60 minutes. 6. Check for formation of condensation, a significant reduction in the formation of condensation must be clearly recognizable (thawing progress). Clearing of fogged/condensed LED headlamps and LED rear lamps on electric vehicles: 1. Drive the vehicle into the workshop (temperature higher than +18 C/+64.4F). 2. Connect battery backup via a charger. 3. Open the front-end flap and ensure sufficient ventilation. 4. Switch on the lights. 5. Leave the vehicle in this state for 60 minutes. 6. Check for formation of condensation, a significant reduction in the formation of condensation must be clearly recognizable (thawing progress). Clearing fogged/condensed halogen/xenon headlamps: 1. Drive the vehicle into the workshop (temperature higher than +18 C/+64.4F). Note: Do not perform an engine wash before the defogging test. 2. Switch off the engine. 3. Open the hood. 4. Switch off the lights. 5. Leave the vehicle in this state for 60 minutes. 6. Check for formation of condensation, a significant reduction in the formation of condensation must be clearly recognizable (thawing progress). Note: If there is no visible reduction in condensation, check the headlamp for malfunctions. (see Remedy 2) It is not physically possible to defog the headlamps completely. Fogging does not impair the operation or the service life of the headlamp. Note: Only implement Remedy 1 for model series 463 (from model year 2018) and model series 465. Remedy 2 A defective headlamp can be identified as follows: 1. Check the headlamp for external damage and that the cover caps and the diaphragm are correctly seated. 2. Check the electrical connectors of the plugs and pins. 3. Check for leak tightness according to LI82.10-P-078307. The test can only be conducted on headlamps. 4. If the headlamp or the rear lamp has any external damage, replace the component part in accordance with the WIS instructions. Note: External damage to the headlamp/rear lamp or faulty seating of the cover caps does not present a warranty or goodwill case. Note: With headlamps, it is possible to install desiccant packs if the problem occurs repeatedly. Open ventilation system LI82.10-P-078302 Closed ventilation system LI82.10-P-078304

occur under certain climatic conditions. It does not lead to any technical impairment of the headlamp. If a pressure compensation diaphragm is fitted in the housing cover, then the lamp unit is a "closed system". Remedy Headlamp: Remedy 1 Clearing fogged/condensed LED headlamps: 1. Drive vehicle into workshop (temperature higher than +18 C/+64.4 F) and connect the exhaust extraction. Note: Do not perform an engine wash before the defogging test. 2. Switch off the engine and connect battery support via a charger. 3. Open the hood. 4. Switch on the lights. 5. Leave the vehicle in this state for 60 minutes. 6. Check for formation of condensation, a significant reduction in the formation of condensation must be clearly recognizable (thawing progress). Clearing of fogged/condensed LED headlamps and LED rear lamps on electric vehicles: 1. Drive the vehicle into the workshop (temperature higher than +18 C/+64.4F). 2. Connect battery backup via a charger. 3. Open the front-end flap and ensure sufficient ventilation. 4. Switch on the lights. 5. Leave the vehicle in this state for 60 minutes. 6. Check for formation of condensation, a significant reduction in the formation of condensation must be clearly recognizable (thawing progress). Clearing fogged/condensed halogen/xenon headlamps: 1. Drive the vehicle into the workshop (temperature higher than +18 C/+64.4F). Note: Do not perform an engine wash before the defogging test. 2. Switch off the engine. 3. Open the hood. 4. Switch off the lights. 5. Leave the vehicle in this state for 60 minutes. 6. Check for formation of condensation, a significant reduction in the formation of condensation must be clearly recognizable (thawing progress). Note: If there is no visible reduction in condensation, check the headlamp for malfunctions. (see Remedy 2) It is not physically possible to defog the headlamps completely. Fogging does not impair the operation or the service life of the headlamp. Note: Only implement Remedy 1 for model series 463 (from model year 2018) and model series 465. Remedy 2 A defective headlamp can be identified as follows: 1. Check the headlamp for external damage and that the cover caps and the diaphragm are correctly seated. 2. Check the electrical connectors of the plugs and pins. 3. Check for leak tightness according to LI82.10-P-078307. The test can only be conducted on headlamps. 4. If the headlamp or the rear lamp has any external damage, replace the component part in accordance with the WIS instructions. Note: External damage to the headlamp/rear lamp or faulty seating of the cover caps does not present a warranty or goodwill case. Note: With headlamps, it is possible to install desiccant packs if the problem occurs repeatedly. Open ventilation system LI82.10-P-078302 Closed ventilation system LI82.10-P-078304

Cause The state of charge (SOC) of the 12V battery has dropped to 45% or less. Remedy This warning message appears as soon as the state of charge (SOC) of the 12V primary battery drops below 45%. This message is displayed to safeguard the vehicle's starting ability. At the same time as the display appears in the instrument cluster, customers with a linked Mercedes me connect account also receive a push notification via the app/by email (if this function is activated). The battery must be charged to a state of charge (SOC) of at least 50%. To do this, an external charger can be connected (please comply with AR54.10-P-1133S) or the vehicle can be driven (by the customer) for 30 to 60 minutes. Please make customers aware of how the vehicle behaves: If the vehicle is used for short journeys, the battery state of charge may slowly drop to less than 45% a negative charge balance A negative charge balance will also occur if the vehicle is used while stationary without running the engine, e.g. if the head unit is used, the ignition is switched on, or other comfort & convenience power consumers, e.g. seat heating/seat ventilation, are active. An unlocked vehicle may increase consumption, because certain vehicle functions are actively kept ready for the customer. In combination with Keyless-Go or flush-mounted door handles, the vehicle may be woken up if the vehicle key is detected in the vicinity of the vehicle. The cause of the discharge can be identified with the aid of the onboard electrical system data in the EZS using XENTRY Diagnosis. See attached examples for identifying typical customer situations (e.g. operation with ignition on, operation of head unit while stationary or vehicle unlocked while parked). Vehicles with code B01+801: When charging while stationary, the 48V battery must have a state of charge (SOC) of 70% before the 12V primary battery, or the secondary battery in the case of code 503, can be charged. To ensure optimum battery care, please also comply with the existing Service Information documents regarding the handling of stock vehicles (SI54.10-P-0024A) and on remaining in transport mode (SI54.00-P-0004A) until immediately before handover to end customers. Special note: Do not replace any parts, if the message has occurred due to battery discharge as a result of the driving profile or the ignition being switched on (see attached examples); in such cases separate warranty and goodwill invoicing is not possible, as this is a normal on-board electrical system protection function. Likewise battery care and recharging do not qualify as a W&G case. Please advise customers accordingly regarding the above-mentioned issues relating to vehicle use.

control unit software for the engine electronics does not correspond to the current series production configuration. This may cause the electrical fault diagnosis of the lambda sensor to not operate as intended, so that in the event of a fault, the check engine indicator lamp may not illuminate. MBUSA will conduct a service campaign. An authorized Mercedes-Benz dealer will update the software for the engine electronics control unit on the affected vehicles.

occur under certain climatic conditions. It does not lead to any technical impairment of the headlamp. If a pressure compensation diaphragm is fitted in the housing cover, then the lamp unit is a "closed system". Remedy Headlamp: Remedy 1 Clearing fogged/condensed LED headlamps: 1. Drive vehicle into workshop (temperature higher than +18 C/+64.4 F) and connect the exhaust extraction. Note: Do not perform an engine wash before the defogging test. 2. Switch off the engine and connect battery support via a charger. 3. Open the hood. 4. Switch on the lights. 5. Leave the vehicle in this state for 60 minutes. 6. Check for formation of condensation, a significant reduction in the formation of condensation must be clearly recognizable (thawing progress). Clearing of fogged/condensed LED headlamps and LED rear lamps on electric vehicles: 1. Drive the vehicle into the workshop (temperature higher than +18 C/+64.4F). 2. Connect battery backup via a charger. 3. Open the front-end flap and ensure sufficient ventilation. 4. Switch on the lights. 5. Leave the vehicle in this state for 60 minutes. 6. Check for formation of condensation, a significant reduction in the formation of condensation must be clearly recognizable (thawing progress). Clearing fogged/condensed halogen/xenon headlamps: 1. Drive the vehicle into the workshop (temperature higher than +18 C/+64.4F). Note: Do not perform an engine wash before the defogging test. 2. Switch off the engine. 3. Open the hood. 4. Switch off the lights. 5. Leave the vehicle in this state for 60 minutes. 6. Check for formation of condensation, a significant reduction in the formation of condensation must be clearly recognizable (thawing progress). Note: If there is no visible reduction in condensation, check the headlamp for malfunctions. (see Remedy 2) It is not physically possible to defog the headlamps completely. Fogging does not impair the operation or the service life of the headlamp. Remedy 2 A defective headlamp can be identified as follows: 1. Check the headlamp for external damage and that the cover caps and the diaphragm are correctly seated. 2. Check the electrical connectors of the plugs and pins. 3. Check for leak tightness according to LI82.10-P-078307. The test can only be conducted on headlamps. 4. If the headlamp or the rear lamp has any external damage, replace the component part in accordance with the WIS instructions. Note: External damage to the headlamp/rear lamp or faulty seating of the cover caps does not present a warranty or goodwill case. Note: With headlamps, it is possible to install desiccant packs if the problem occurs repeatedly. Open ventilation system LI82.10-P-078302 Closed ventilation system LI82.10-P-078304

ME-SFI control unit software does not meet current production specifications. As a result, a check engine malfunction indicator lamp might erroneously be triggered. MBUSA will conduct a service campaign. An authorized Mercedes-Benz dealer will update the ME-SFI control unit software.

Cause Potential causes: Assembly of the underfloor paneling with unloaded body (results in tension after compression of vehicle in K0- design level) Relative movement between front and rear engine compartment lining Torque loss of the screw connection Accumulation of stones and dirt Remedy Changes Made: Screw connection in K0-design level (vehicle compressed - on ground at ride height) and taking into account the correct screw sequence Additional screw connection points (minimization of relative movement) Use of rivet nuts and screws with a larger diameter Integration of spacer rings (reduction of accumulation of stones and dirt) Note: In order to rule out that other component parts may be responsible for the noise, remove the underfloor paneling first. If the noise complaint is NOT present after removal, proceed with underfloor paneling rework. Underfloor paneling rework 1. Order after-sales kit with item number A2326207003 for the rework. 2. After receiving the after-sales kit (A2326207003), check the contents: 22 screws (A0109902604) / 14 rivet nuts (A0009902349) / 4 spacer washers (A2326207203). If the content is complete, start rework in the next step. 3. Disassemble underfloor paneling. If front and rear engine compartment lining are bonded to one another, order new parts (A2326201101, A2326268900). 4. Clean underfloor paneling and integral carrier. Failure to clean the parts can lead to noise once re-assembled. 5. Mark four additional screw connection points on the front engine compartment lining (see attachment 1). See appendix 2 for dimensions. 6. Drill holes with d=9 mm on the markings. 7. Screw front and rear engine compartment lining together using the screw connection points already available (see attachment 3). Both linings are therefore aligned to one another. Important: Pay attention to alignment of the elongated holes on the external edges. 8. Drill into the rear engine compartment lining using the four additional holes with d=9 mm (see attachment 4). 9. Disassemble front and rear engine compartment lining. 10. Drill out three existing rivet nuts with d=9 mm (see attachment 5). 11. Insert seven new rivet nuts (A0009902349) (see attachment 6). 12. Drill out seven existing rivet nuts in the integral carrier with d=9 mm (see attachment 7). Caution: Do not damage integral carrier. 13. Remove remaining rivets that have fallen off from the integral carrier using a magnetic tube (see attachment 8). 14. Insert new rivet nuts (A0009902349) in the integral carrier (see attachment 9). 15. Fix four spacer rings (A2326207203) in place using bonding points between underfloor paneling and integral carrier (for position, see attachment 10 and attachment 11). Caution: No adhesive can be applied to the contact areas (risk of torque loss). 16. Install underfloor paneling on vehicle with 14 Nm (observe screw sequence in attachment 12). Important: Use screw item number A0109902604. If there are any issues or concerns, please open a TIPS case and send to the Body/Chassis/Entertainment inbox.

Cause Frictional vibrations Remedy The intent of this document is to reduce or eliminate noise from high performance AMG brakes. AMG brakes are designed for performance under high load and in certain scenarios, can emit noise. Some of the scenarios are: Driving style Brake pressure and application style (stop-and-go traffic with consistent low brake pressure riding brakes where the brakes cannot cool sufficiently between applications). Ambient temperatures 1. Beginning Diagnostics: a) Check whether the complaint can be reproduced and at which axle or side the noises occur (ideally together with the customer while driving). b) Check the affected system for component wear, mechanical damage or localized overheating damage. Replace damaged components as necessary. c) Assess condition of brake rotors and pads per WIS and visually (i.e. long periods of stagnation, etc...). d) Clean brake components free of brake dust and debris. d) Secure vehicle on a lift. 1. Start the engine and depress the brake pedal 3-4 times. 2. Check each wheel to see if they turn freely by hand. 3. If a wheel is not turning freely by hand, this needs to be addressed prior to re-assessing the noise concern. e) Check whether, apart from this document, an additional document exists for the specific model in question, and if so, work through it and then continue. 2. Specific Axle Work: NOTE: If the brake pad has a metal backing plate, there is no need to affix the adhesive film. Continue with applying chamfer and Molykote as instructed below. IMPORTANT: Be absolutely certain to not allow paste between friction surfaces of the pad and disc! a) If the noises are coming from the front axle. 1. Remove brake linings of front axle. 2. Clean all contact points on brake lining backing plate, including the brake lining guide pins and brake caliper/carrier. 3. Clean bonding surface (where pistons contact back of brake pad). Apply adhesive film to the backplate of the piston-side brake lining where the piston contacts the pad backing plate. See picture "Adhesive and Paste Application Area". 4. Be sure to remove both brown paper backing sides of the adhesive film, it is double sided adhesive film. 5. If adhesive is already installed on backing plate where pistons contact the back of the pad, you may gently scrape off and re-apply a new adhesive or Molykote. Must not apply the Molykote on top of the adhesive. 6. Chamfer edges (gently round off sharp leading edges) on brake pads. Some pads have vertical grooves, these can be gently chamfered with a triangular file as well. See picture "Chamfering Technique". 7. Apply Molykote to the sides of the backing plate. See picture "Adhesive and Paste Application Area". 8. After installing the brake linings, actuate the brake for 30 seconds. b) If the noises are coming from the rear axle. 1. Remove brake pads of rear axle. 2. Clean all contact points on brake lining backing plate and brake caliper/carrier. 3. Clean bonding surface (where pistons contact back of brake pad). Apply adhesive film to the backplate of the piston-side brake lining. 4. Chamfer edges (round off sharp leading edges) on brake pads. See picture "Chamfering Technique". 5. Grease contact points (red areas on attachment "Rear Pad Grease Area") between brake lining and guide of brake caliper with Molykote. 3. Brake Bedding Process: a) Before trip, the mileage incurred must be clarified with the customer (approx. 30 miles). b) Select a suitable route so speeds of approximately 65 MPH can be achieved. c) If the vehicle is an AMG P3 Hybrid, switch off recouperation prior to bedding in brakes. d) Brake the vehicle 15 times with a brake pressure of approx. 30 bar (have the passenger read it out using XENTRY) from 62 MPH to 30 MPH (no emergency stops and no braking in the ESP control range). Maintain a cooling distance of approx. 1 mile between brake application

Cause Frictional vibrations Remedy The intent of this document is to reduce or eliminate noise from high performance AMG brakes. AMG brakes are designed for performance under high load and in certain scenarios, can emit noise. Some of the scenarios are: Driving style Brake pressure and application style (stop-and-go traffic with consistent low brake pressure riding brakes where the brakes cannot cool sufficiently between applications). Ambient temperatures 1. Beginning Diagnostics: a) Check whether the complaint can be reproduced and at which axle or side the noises occur (ideally together with the customer while driving). b) Check the affected system for component wear, mechanical damage or localized overheating damage. Replace damaged components as necessary. c) Assess condition of brake rotors and pads per WIS and visually (i.e. long periods of stagnation, etc...). d) Clean brake components free of brake dust and debris. d) Secure vehicle on a lift. 1. Start the engine and depress the brake pedal 3-4 times. 2. Check each wheel to see if they turn freely by hand. 3. If a wheel is not turning freely by hand, this needs to be addressed prior to re-assessing the noise concern. e) Check whether, apart from this document, an additional document exists for the specific model in question, and if so, work through it and then continue. 2. Specific Axle Work: NOTE: If the brake pad has a metal backing plate, there is no need to affix the adhesive film. Continue with applying chamfer and brake paste as instructed below. IMPORTANT: Be absolutely certain to not allow paste between friction surfaces of the pad and disc! a) If the noises are coming from the front axle. 1. Remove brake linings of front axle. 2. Clean all contact points on brake lining backing plate, including the brake lining guide pins and brake caliper/carrier. 3. Clean bonding surface (where pistons contact back of brake pad). Apply adhesive film to the backplate of the piston-side brake lining where the piston contacts the pad backing plate. See picture "Adhesive and Paste Application Area". If adhesive is already installed on backing plate, you may gently scrape off and re-apply a new adhesive. In some instances the adhesive may be very carefully removed and Molykote applied instead. 4. Chamfer edges (gently round off sharp leading edges) on brake pads. Some pads have vertical grooves, these can be gently chamfered with a triangular file as well. See picture "Chamfering Technique". 5. Apply Molykote to the sides of the backing plate. See picture "Adhesive and Paste Application Area". 6. After installing the brake linings, actuate the brake for 30 seconds. b) If the noises are coming from the rear axle. 1. Remove brake pads of rear axle. 2. Clean all contact points on brake lining backing plate and brake caliper/carrier. 3. Clean bonding surface (where pistons contact back of brake pad). Apply adhesive film to the backplate of the piston-side brake lining. 4. Chamfer edges (round off sharp leading edges) on brake pads. See picture "Chamfering Technique". 5. Grease contact points (red areas on attachment "Rear Pad Grease Area") between brake lining and guide of brake caliper with Molykote. 3. Brake Bedding Process: a) Before trip, the mileage incurred must be clarified with the customer (approx. 30 miles). b) Select a suitable route so speeds of approximately 65 MPH can be achieved. c) If the vehicle is an AMG P3 Hybrid, switch off recouperation prior to bedding in brakes. d) Brake the vehicle 15 times with a brake pressure of approx. 30 bar (have the passenger read it out using XENTRY) from 62 MPH to 30 MPH (no emergency stops and no braking in the ESP control range). Maintain a cooling distance of approx. 1 mile between brake applications. e) Finally drive approx. 3 miles to allow the system to cool. f) Reassess noise.

with Easy Entry function), noise (breakaway noise) when leaving the limit stops of the height adjustment. Cause Height adjustment moves to the top/bottom limit stop and jams. 1. Driver seat control unit software 2. Steering column height adjustment transmission Remedy There are 2 repair procedures to follow depending on vehicle (differentiated according to model and vehicle manufacturing date) 1. Perform software update of driver's seat control unit 2. Replace repair kit for steering column height adjustment Procedure 1: Perform software update of driver seat control unit. ALL models except 205/253/293/222/217/231/463/213/238/257/290 up to special equipment code 801. Move out the fore/aft adjustment to the end position. Release jamming of height adjustment by knocking with palm of hand onto top of steering wheel/at the same time pressing adjustment switch downward After releasing the jam, perform a software update of the driver's seat control unit If procedure 1 is not effective, there is no new software available for the driver seat control unit, or the chassis is not listed above (167, 223, 294, 206, 294, 295, 296, 297,232,214,254) then use procedure 2. Procedure 2: Replace repair kit for steering column height adjustment. Move out the fore/aft adjustment to the end position. Release jamming of height adjustment by knocking with palm of hand onto top of steering wheel/at the same time pressing adjustment switch downward Remove footwell trim on driver's side. Determine type version of height adjustment in XENTRY Parts Information and order appropriate replacement part (refer to attachment). 1. Version A: A 231 460 77 00 2. Version B: A 205 460 38 03 Remove steering column. Remove height adjustment (adjustment repair kit). Install repair kit (adjustment repair kit) (observe tightening torque for screws in attachment). Install steering column. If possible, flash driver seat control unit to latest software release or code SCN again. Commission driver seat control unit (normalization of limit stops is deleted and learning process repeated).

our customers, Mercedes-Benz USA, LLC (MBUSA) is extending the warranty coverage on the Diagnostic Module for Tank Leakage detection (DMTL) in certain Model Year (MY) vehicles listed below from the original New Vehicle Limited Warranty of 4 years/50,000 miles to 10 years/120,000 miles (vehicles certified as LEV II) and 15 years/150,000 miles (vehicles certified as LEV III), whichever occurs first, for the following condition: Under certain circumstances, the DMTL may trigger erroneous Diagnostic Trouble Code (DTC) entries that may result in the illumination of the Check Engine Malfunction Indicator Lamp (MIL).

Cause Potential causes: Assembly of the underfloor paneling with unloaded body (results in tension after compression of vehicle in K0- design level) Relative movement between front and rear engine compartment lining Torque loss of the screw connection Accumulation of stones and dirt Remedy Screw connection in K0-design level (vehicle sitting on ground on it's own weight) and taking into account the correct screw sequence Additional screw connection points (minimization of relative movement) Increase in tightening torque Integration of spacer rings (reduction of accumulation of stones and dirt) In order to rule out that other component parts may be responsible for the noise, remove the underfloor paneling first. If the noise complaints are NO LONGER present after removal, proceed with underfloor paneling rework. Underfloor paneling rework 1. Order after-sales kit with item number A2326207003 for the rework. 2. After receiving the after-sales kit (A2326207003), check the contents: 22 screws (A0109902604) / 14 rivet nuts (A0009902349) / 4 spacer washers (A2326207203). If the content is complete, start rework in the next step. 3. Disassemble underfloor paneling. If front and rear engine compartment lining are bonded to one another, order new parts (A2326201101, A2326268900). 4. Clean underfloor paneling and integral carrier. 5. Mark four additional screw connection points on the front engine compartment lining (see attachment 1). See appendix 2 for dimensions. 6. Drill holes with d=9 mm on the markings. 7. Screw front and rear engine compartment lining together using the screw connection points already available (see attachment 3). Both linings are therefore aligned to one another. Important: Pay attention to alignment of the elongated holes on the external edges. 8. Drill into the rear engine compartment lining using the four additional holes with d=9 mm (see attachment 4). 9. Disassemble front and rear engine compartment lining. 10. Drill out three existing rivet nuts with d=9 mm (see attachment 5). 11. Insert seven new rivet nuts (A0009902349) (see attachment 6). 12. Drill out seven existing rivet nuts in the integral carrier with d=9 mm (see attachment 7). Caution: Do not damage integral carrier. 13. Remove remaining rivets that have fallen off from the integral carrier using a magnetic tube (see attachment 8). 14. Insert new rivet nuts (A0009902349) in the integral carrier (see attachment 9). 15. Fix four spacer rings (A2326207203) in place using bonding points between underfloor paneling and integral carrier (for position, see attachment 10 and attachment 11). Caution: No adhesive can be applied to the contact areas (risk of torque loss). 16. Install underfloor paneling on vehicle with 16 Nm (observe screw sequence in attachment 12). Important: Use screw item number A0109902604.

In contrast to a leaky headlamp, physical fogging does not result in a technical impairment of the headlamp. A leak test must be performed to determine if physical fogging exists or if the headlamp is leaky. Remedy Check for external damage: You can identify a damaged headlamp in the following way: For headlamps with a closed system 1. Check the headlamps for any external damage and check also for correct seating of the Gore-diaphragm/correct latching of the cover caps. 2. If the headlamp exhibits any external damage, replace the headlamp. For headlamps with an open system 1. Check the headlamps for any external damage and seal off the vent, then make sure the cover caps are latched correctly into place. 2. If the headlamp exhibits any external damage, replace the headlamp. Note: External damage to the headlamp does not present a warranty or goodwill case. 1. Clear fogged/condensed LED headlamps and LED rear lamps: 1. Drive the vehicle into the workshop (temperature higher than +18 C/+64.4F). Note: Do not perform an engine wash before the defogging test. 2. Switch off the engine and connect battery support via a charger. 3. Open the hood or trunk. 4. Switch on the lights. 5. Leave the vehicle in this state for 60 minutes. 6. Check for formation of condensation, a significant reduction in the formation of condensation must be clearly recognizable (thawing progress). 7. If the condensation has disappeared, nothing else has to be done. Note: If defrosting has been performed, you can skip the first step. 2. Leak test of headlamp with overpressure: Connect test adapter to pressure tester. (Figure 1) Check test adapter for leak tightness. To do so, connect plug and coupling (picture 2) and apply a maximum overpressure of 30 mbar. The pressure must remain constant. If the pressure does not remain constant, use a new adapter. All vents have to be sealed with sealing compound and the existing diaphragm with the stamp (picture 3 [3]). (Picture 4) Make allowance for the different headlamp variants here (there are different outlet openings). Check if the headlamp needs to be removed to gain access to the diagnostic socket on the headlamp housing. Plug the adapter onto the diagnostic socket on the headlamp housing. (Picture 5). Apply a maximum of 30 mbar overpressure to the headlamp housing. Note: If the maximum overpressure of 50 mbar is exceeded the headlamp seal will be damaged (picture 6). If a pressure drop of less than 10 mbar is measured within 30 seconds, the headlamp is tight and there is natural physical condensation. If a higher pressure drop than 10 mbar is measured within 30 seconds, the headlamp is leaky. Note: The leaky position can be localized with the aid of soap suds. If the pressure test is not passed, the headlamp is leaky. If the cause cannot be rectified, the headlamp must be replaced. Note: If the headlamp is replaced, no dry packs may be installed on the new replacement headlamp. AR82.10-P-5455WT was created for the pressure test. This AR can be used as a reference manual for all closed headlamps. In the event of an open headlamp system, the vent ducts must be sealed before the pressure test.

occur under certain climatic conditions. It does not lead to any technical impairment of the headlamp. Remedy NOTE: If a pressure compensation diaphragm is fitted in the housing cover, then the lamp unit is a "closed system". Headlamp: Remedy 1 Clearing fogged/condensed LED headlamps and LED rear lamps: 1. Drive vehicle into workshop (temperature higher than +18 C/+64.4 F) and connect the exhaust extraction. Note: Do not perform an engine wash before the defogging test. 2. Switch off the engine and connect battery support via a charger. 3. Open the hood or trunk. 4. Switch on the lights. 5. Leave the vehicle in this state for 60 minutes. 6. Check for formation of condensation, a significant reduction in the formation of condensation must be clearly recognizable (thawing progress). Clearing fogged/condensed halogen/xenon headlamps: 1. Drive the vehicle into the workshop (temperature higher than +18 C/+64.4F). Note: Do not perform an engine wash before the defogging test. 2. Switch off the engine. 3. Open the hood. 4. Switch off the lights. 5. Leave the vehicle in this state for 60 minutes. 6. Check for formation of condensation, a significant reduction in the formation of condensation must be clearly recognizable (thawing progress). Note: If there is no visible reduction in the formation of condensation, check the headlamp for damage. (See Remedy 2) It is not physically possible to defog the headlamps completely. Fogging does not impair the operation or the service life of the headlamp. Remedy 2 A damaged headlamp can be identified as follows: 1. Check the headlamp for external damage and that the cover caps and the diaphragm are correctly seated. 2. Check the electrical connectors of the plugs and pins. 3. Check for leak tightness in accordance with LI82.10-P-078896 The test can only be conducted on headlamps. 4. If the headlamp or the rear lamp has any external damage, replace the component part in accordance with the WIS instructions.

Cause Frictional vibrations Remedy AMG brake systems are designed for high loads. This can result in noises under certain operating conditions and driving styles. Please refer to the Operator's Manual for further information such as care and maintenance instructions (washing vehicle directly after heavy use and using approved cleaning agents). These are dependent on speed, brake pressure or ambient conditions such as temperature and air humidity. 1. Beginning Diagnostics: a) Check whether the complaint can be reproduced and at which axle or side the noises occur (ideally together with the customer while driving). b) Check the affected system for component wear, mechanical damage or localized overheating damage. Replace damaged components as necessary. c) Assess condition of brake rotors and pads per WIS and visually (i.e. long periods of stagnation, etc...). d) Clean brake components free of brake dust and debris. d) Secure vehicle on a lift. 1. Start the engine and depress the brake pedal 3-4 times. 2. Check each wheel to see if they turn freely by hand. 3. If a wheel is not turning freely by hand, this needs to be addressed prior to re-assessing the noise concern. e) Check whether, apart from this document, an additional document exists for the specific model in question, and if so, work through it and then continue. 2. Specific Axle Work: NOTE: If the brake pad has a metal backing plate, there is no need to affix the adhesive film. a) If the noises are coming from the front axle => Affix linings with adhesive film (see attachments for front axle). If backing plate is installed on pads, move to step 3. 1. Remove brake linings of front axle. 2. Clean all contact points on brake lining and brake caliper/carrier. 3. Clean bonding surface (where pistons contact back of brake pad). Apply adhesive film to the backplate of the piston-side brake lining where the piston contacts the pad backing plate. See picture "Adhesive and Paste Application Area". 4. Chamfer edges (round off sharp leading edges) on brake pads. See picture "Chamfered Pads". 5. Apply heat-resistant lubricating paste to the sides of the backing plate. See picture "Adhesive and Paste Application Area". 6. After installing the brake linings, actuate the brake for 30 seconds. b) If the noises are coming from the rear axle => Affix linings with adhesive film and grease the lining as per the specification (see attachments for rear axle). 1. Remove brake pads of rear axle. 2. Cleaning all contact points on brake lining and brake caliper/carrier. 3. Grease contact points (red areas) between brake lining and guide of brake caliper with heat-resistant lubricating paste. 4. Clean bonding surface (where pistons contact back of brake pad). Apply adhesive film to the backplate of the piston-side brake lining. 5. Chamfer edges (round off sharp leading edges) on brake pads. See picture "Chamfered Pads". IMPORTANT: Be absolutely certain to not allow paste between friction surfaces of the pad and disc! 3. Brake Bedding Process: a) Before trip, the mileage incurred must be clarified with the customer (approx. 30 miles). b) Select a suitable route so speeds of approximately 65 MPH can be achieved. c) If the vehicle is an AMG P3 Hybrid, switch off recouperation prior to bedding in brakes. d) Brake the vehicle 15 times with a brake pressure of approx. 30 bar (have the passenger read it out using XENTRY) from 62 MPH to 30 MPH (no emergency stops and no braking in the ESP control range). Maintain a cooling distance of approx. 1 mile between brake applications. e) Finally drive approx. 3 miles to allow the system to cool. f) Reassess noise.

Cause Potential causes: Assembly of the underfloor paneling with unloaded body (results in tension after compression of vehicle in K0- design level) Relative movement between front and rear engine compartment lining Torque loss of the screw connection Accumulation of stones and dirt Remedy Screw connection in K0-design level (vehicle compressed) and taking into account the correct screw sequence Additional screw connection points (minimization of relative movement) Increase in tightening torque Integration of spacer rings (reduction of accumulation of stones and dirt) -> see underfloor paneling rework instructions 1. Create a TIPS case and send to Body/Chassis/Entertainment inbox. 2. Attach video/recording of the noise problem to the case. Be sure the recording is clear and audible. 3. After entering the TIPS case, the aftersales kit required for rework is sent (the required parts are not yet available via the replacement parts service). 4. After receiving the aftersales kit (A2326207003), check the contents: 22 screws (A0109902604) / 14 rivet nuts + 1 replacement rivet nut (A0009902349) / 4 spacer rings (A2326207203) Underfloor paneling rework 1. Disassemble underfloor paneling. If front and rear engine compartment lining are bonded to one another, order new parts (A2326201101, A2326268900). 2. Clean underfloor paneling and integral carrier. 3. Mark four additional screw connection points on the front engine compartment lining (see attachment 1). See appendix 2 for dimensions. 4. Drill holes with d=9 mm on the markings. 5. Screw front and rear engine compartment lining together using the screw connection points already available (see attachment 3). Both linings are therefore aligned to one another. Important: Pay attention to alignment of the elongated holes on the external edges. 6. Drill into the rear engine compartment lining using the four additional holes with d=9 mm (see attachment 4). 7. Disassemble front and rear engine compartment lining. 8. Drill out three existing rivet nuts with d=9 mm (see attachment 5). 9. Insert seven new rivet nuts (A0009902349) (see attachment 6). 10. Drill out seven existing rivet nuts in the integral carrier with d=9 mm (see attachment 7). Caution: Do not damage integral carrier. 11. Remove remaining rivets that have fallen off from the integral carrier using a magnetic tube (see attachment 8). 12. Insert new rivet nuts (A0009902349) in the integral carrier (see attachment 9). 13. Fix four spacer rings (A2326207203) in place using bonding points between underfloor paneling and integral carrier (for position, see attachment 10 and attachment 11). Caution: No adhesive can be applied to the contact areas (risk of torque loss). 14. Install underfloor paneling on vehicle with 17 Nm (observe screw sequence in attachment 12). Important: Use screw item number A0109902604.

Cause Toothed rack in the area of the screw drive of the electric power steering needs additional grease. Remedy 1. Lift the vehicle and remove the center engine compartment lining; for basic data, see WIS AR61.20-P-1105S 2. Loosen the bellows of the electric power steering on the right of the steering gear and slide outward on the tie rod the tie rods do not need to be removed! For basic data, see WIS AR46.40-P-9998S 3. Turn the wheels fully to the right. The screw drive of the rack-and-pinion steering becomes visible. See picture 1 of screw drive 4. Clean the screw drive with a clean cloth and remove the existing grease. See picture 2 of cleaned screw drive 5. Prepare a clean brush for greasing the screw drive and, if necessary, mask off the metal sleeve of the brush or similar components to avoid damage to the steering housing or to the screw drive of the toothed rack. See picture 3 with example brush 6. Apply a sufficient amount of long-life grease (A001 989 84 51 09) to the screw drive of the toothed rack with the brush, making sure that this is applied evenly all around; see picture 4 of greased screw drive 7. Reinstall the steering bellows, making sure to replace the inner clamp! Important: The contact surfaces of the bellows and the rack-and-pinion steering should be coated with a thin layer of Renolit (Renolit CX-FO 20, A094 989 38 00 11). For basic data, see WIS AR46.40-P-9998S 8. Move the rack-and-pinion steering several times from one steering limitation to the other to ensure that the grease is evenly distributed in the housing. 9. Assemble in the reverse order.

Cause Potential causes: Assembly of the underfloor paneling with unloaded body (results in tension after compression of vehicle in K0- design level) Relative movement between front and rear engine compartment lining Torque loss of the screw connection Accumulation of stones and dirt Remedy Screw connection in K0-design level (vehicle compressed) and taking into account the correct screw sequence Additional screw connection points (minimization of relative movement) Increase in tightening torque Integration of spacer rings (reduction of accumulation of stones and dirt) -> see underfloor paneling rework instructions 1. Create a TIPS case 2. After entering the TIPS case, the aftersales kit required for rework is sent (the required parts are not yet available via the replacement parts service). 3. After receiving the aftersales kit (A2326207003), check the contents: 22 screws (A0109902604) / 14 rivet nuts + 1 replacement rivet nut (A0009902349) / 4 spacer rings (A2326207203) Underfloor paneling rework 1. Disassemble underfloor paneling. If front and rear engine compartment lining are bonded to one another, order new parts (A2326201101, A2326268900). 2. Clean underfloor paneling and integral carrier. 3. Mark four additional screw connection points on the front engine compartment lining (see attachment 1). See appendix 2 for dimensions. 4. Drill holes with d=9 mm on the markings. 5. Screw front and rear engine compartment lining together using the screw connection points already available (see attachment 3). Both linings are therefore aligned to one another. Important: Pay attention to alignment of the elongated holes on the external edges. 6. Drill into the rear engine compartment lining using the four additional holes with d=9 mm (see attachment 4). 7. Disassemble front and rear engine compartment lining. 8. Drill out three existing rivet nuts with d=9 mm (see attachment 5). 9. Insert seven new rivet nuts (A0009902349) (see attachment 6). 10. Drill out seven existing rivet nuts in the integral carrier with d=9 mm (see attachment 7). Caution: Do not damage integral carrier. 11. Remove remaining rivets that have fallen off from the integral carrier using a magnetic tube (see attachment 8). 12. Insert new rivet nuts (A0009902349) in the integral carrier (see attachment 9). 13. Fix four spacer rings (A2326207203) in place using bonding points between underfloor paneling and integral carrier (for position, see attachment 10 and attachment 11). Caution: No adhesive can be applied to the contact areas (risk of torque loss). 14. Install underfloor paneling on vehicle with 17 Nm (observe screw sequence in attachment 12). Important: Use screw item number A0109902604.

eight-cylinder engine, the sealing ring in the engine thermostat could detach, causing a delay in the heating of the engine coolant. This may also cause the check engine Malfunction Indicator Lamp ('MIL') to illuminate.

Cause Frictional vibrations Remedy AMG brake systems are designed for high loads. This can result in noises under certain operating conditions and driving styles. Please refer to the Operator's Manual for further information such as care and maintenance instructions (washing vehicle directly after heavy use and using approved cleaning agents). These are dependent on speed, brake pressure or ambient conditions such as temperature and air humidity. 1. Beginning Diagnostics: a) Check whether, apart from this document, an additional document exists for the model series in question, and if so, work through it and then continue with1b. b) Check whether the complaint can be reproduced and at which axle or side the noises occur (ideally together with the customer while driving). c) Check the affected system for component wear, mechanical damage or localized overheating damage. 1. Replace damaged components as necessary and re-assess noise concern. d) Secure vehicle on a lift. 1. Start the engine and depress the brake pedal 3-4 times. 2. Check each wheel to see if they turn freely by hand. 3. If a wheel is not turning freely by hand, this needs to be addressed prior to re-assessing the noise concern. e) Assess condition of brake rotors and pads per WIS and visually (i.e. long periods of stagnation, etc...). 2. Specific Axle Work: NOTE: If brake pad has a metal backing plate, there is no need to affix the adhesive film. a) If the noises are coming from the front axle => Affix linings with adhesive film (see attachments for front axle). If backing plate is installed on pads, move to step 3. 1. Remove brake linings of front axle. 2. Clean all contact points on brake lining and brake caliper/carrier. 3. Clean bonding surface (where pistons contact back of brake pad). Apply adhesive film to the backplate of the piston-side brake lining. For 6 piston calipers, only in the area of the center piston. For other piston caliper configurations less than 6, apply where the piston(s) makes contact with the back of the pad. 4. Chamfer edges (round off sharp leading edges) on brake pads. See picture "Chamfered Pads". 5. After installing the brake linings, actuate the brake for 30 seconds. b) If the noises are coming from the rear axle => Affix linings with adhesive film and grease the lining as per the specification (see attachments for rear axle). 1. Remove brake pads of rear axle. 2. Cleaning all contact points on brake lining and brake caliper/carrier. 3. Grease contact points (red areas) between brake lining and guide of brake caliper with heat-resistant lubricating paste. 4. Clean bonding surface (where pistons contact back of brake pad). Apply adhesive film to the backplate of the piston-side brake lining. 5. Chamfer edges (round off sharp leading edges) on brake pads. See picture "Chamfered Pads". IMPORTANT: Be absolutely certain to not allow paste between friction surfaces of the pad and disc! 3. Brake Bedding Process: a) Before trip, the mileage incurred must be clarified with the customer (approx. 30 miles). b) Select a suitable route so speeds of approximately 65 MPH can be achieved. c) Brake the vehicle 15 times with a brake pressure of approx. 30 bar (have the passenger read it out using XENTRY) from 62 MPH to 30 MPH (no emergency stops and no braking in the ESP control range). Maintain a cooling distance of approx. 1 mile between brake applications. d) Finally drive approx. 3 miles to allow the system to cool. e) Reassess noise.

In our continuing efforts to assure the proper performance of Mercedes-Benz products and to enhance the satisfaction of our customers, Mercedes-Benz USA, LLC (MBUSA) is extending the warranty coverage on the engine thermostat (including software update) installed in certain Model Year (MY) vehicles (with engines M176, M177, M178) listed below from the original New Vehicle Limited Warranty of 4 years/50,000 miles to 15 years/150,000 miles (whichever occurs first), due to the following condition In the affected vehicles, the sealing ring in the engine thermostat could detach, causing a delay in the heating of the engine coolant. This may also cause the check engine Malfunction Indicator Lamp (MIL) to illuminate.

Cause Fogging of the rear lamps is a natural phenomenon, which can occur under certain climatic conditions. This does not lead to any technical impairment of the rear lamps. Remedy Rear lamp: Remedy 1: Clearing fogged/condensed rear lamps: 1. Drive the vehicle into the workshop (temperature higher than +18 C/+64.4 F) Note: Do not wash the vehicle or subject it to high-pressure cleaning before the defogging test. 2. Switch off the engine and connect battery support via a charger. 3. Open the trunk. 4. Switch on the exterior lighting. 5. Leave the vehicle in this state for 60 minutes. 6. Check for formation of condensation -> a significant reduction in the formation of condensation must be clearly recognizable (defogging progress). Note: -If no reduction in the degree of fogging is visible, the rear lamp is defective and must be replaced. -It is not physically possible to defog the headlamps completely some residual fogging may remain. Fogging does not impair the functionality or the service life of the rear lamps. -Simultaneous fogging of multiple component parts indicates extreme climatic conditions and also does not impair the functionality or the service life of the rear lamps. Remedy 2: You can recognize a defective rear lamp as follows: 1. Check the rear lamps to ensure that no external damage is present, and that the differential aeration cells and the diaphragm are present and correctly seated. -> If there are signs of external damage on the rear lamp, the component parts must be replaced as per WIS instructions. 2. Check the electrical connectors of the plugs and pins. -> If moisture/corrosion/etc. is present, the component part must be replaced as per WIS instructions. 3. Check for leak tightness -> Close all openings with Terostat IX or similar and establish and stabilize via an overpressure (4050 mbar) via the plug. -> In the event of a sudden pressure drop, the component part must be replaced as per WIS instructions. Note: External damage to the rear lamps does not constitute a warranty or goodwill case.

occur under certain climatic conditions. It does not lead to any technical impairment of the headlamp. Headlamps comply with all applicable standards. If a pressure compensation diaphragm is fitted in the housing cover, then the lamp unit is a "closed system". Remedy Headlamp: Remedy 1 Clearing fogged/condensed LED headlamps and LED rear lamps: 1. Drive vehicle into workshop (temperature higher than +18 C/+64.4 F) and connect the exhaust extraction. Note: Do not perform an engine wash before the defogging test. 2. Switch off the engine and connect battery support via a charger. 3. Open the hood or trunk. 4. Switch on the lights. 5. Leave the vehicle in this state for 60 minutes. 6. Check for formation of condensation, a significant reduction in the formation of condensation must be clearly recognizable (thawing progress). Clearing fogged/condensed halogen/xenon headlamps: 1. Drive the vehicle into the workshop (temperature higher than +18 C/+64.4F). Note: Do not perform an engine wash before the defogging test. 2. Switch off the engine. 3. Open the hood. 4. Switch off the lights. 5. Leave the vehicle in this state for 60 minutes. 6. Check for formation of condensation, a significant reduction in the formation of condensation must be clearly recognizable (thawing progress). Note: If there is no visible reduction in the formation of condensation, check the headlamp for a defect. (See Remedy 2) It is not physically possible to defog the headlamps completely. Fogging does not impair the operation or the service life of the headlamp. Remedy 2 A Damaged headlamp can be identified as follows: 1. Check the headlamp for external damage and that the cover caps and the diaphragm are correctly seated. 2. Check the electrical connectors of the plugs and pins. 3. Check for leak tightness in accordance with LI82.10-P-078307. The test can only be conducted on headlamps. 4. If the headlamp or the rear lamp has any external damage, replace the component part in accordance with the WIS instructions. Note: External damage to the headlamp/rear lamp or faulty seating of the cover caps does not present a warranty or goodwill case. With headlamps, it is possible to install desiccant packs if the problem occurs repeatedly. Open ventilation system: LI82.10-P-064766. Closed ventilation system LI82.10-P-078304

Cause Fogging of the rear lamps is a natural phenomenon, which can occur under certain climatic conditions. This does not lead to any technical impairment of the rear lamps. Remedy Rear lamp: Remedy 1: Clearing fogged/condensed rear lamps: 1. Drive the vehicle into the workshop (temperature higher than +18 C/+64.4 F) Note: Do not wash the vehicle or subject it to high-pressure cleaning before the defogging test. 2. Switch off the engine and connect battery support via a charger. 3. Open the trunk. 4. Switch on the exterior lighting. 5. Leave the vehicle in this state for 60 minutes. 6. Check for formation of condensation -> a significant reduction in the formation of condensation must be clearly recognizable (defogging progress).

May also complain of the engine running roughly and/or a loss of power. Multiple Causes Remedy Please see the document "Remedy Instructions" in attachments. For MY19+ G63 there may be an alternate solution available. Please reference LI07.61-P-076755 before performing the steps in this LI.

("MY") 2022- 2023 SL (232 platform). The vehicles will be visible and flagged in VMI as "OPEN" on March 1, 2024. Mercedes-Benz AG ("MBAG"), the manufacturer of Mercedes-Benz vehicles, has determined that on certain MY 2022-2023 SL (232 platform) vehicles, the Engine Control Unit software might not correspond to the current production specifications. As a consequence, the engine fan may run for an excessive amount of time after the vehicle is shut off. MBUSA will conduct a service campaign. An authorized Mercedes-Benz dealer will update the Engine Control Unit software.

platform) vehicles, the Engine Control Unit software might not correspond to the current production specifications. As a consequence, the engine fan may run for an excessive amount of time after the vehicle is shut off. MBUSA will conduct a service campaign. An authorized Mercedes-Benz dealer will update the Engine Control Unit software.

of repair needs for A and B: A. Locking hooks may require adjustment or Soft Top Flap Assembly does not reach intermediate position B. Calibration of the Soft Top Flap Assembly may be required Remedy Analysis to identify the remedy: If available, perform a software update of the rear passenger compartment control unit (N22/6). Then reconstruct the fault profile. If faults continue to be present: Check the fault codes in N22/6 (Rear passenger compartment control unit) in the quick test. B196277 and/or B196377: Perform teach-in process. Select "YES" for the question regarding part exchange. If fault message appears following the process, continue with A. If no fault message appears, check the function. If the soft top does not function, continue with B. B228646 and/or B228654: Execute rear passenger compartment control unit (N22/6) control unit log and continue with step A. B180013 and/or B180071 and/or B180077: Check the wiring at the engine of the soft top lock in the top of the soft top as well as the Hall sensor above. If nothing visually can be seen: Open a TIPS Case If remedy is successful: Processing is complete; otherwise, continue with step B. If none of the specified fault codes occurs in the quick test, continue with step B.

Review the software numbers at the end of this text. If none of the software numbers match what is on the vehicle: update the software, clear any codes and release the vehicle. If no update is available: create a TIPS case If one of the software number pairs match what is on the vehicle and P231A00 is present: create a TIPS case SOFTWARE NUMBERS: All variants will have HW ID: A1779010606 OLD NEW A1779022919 --> A1779023119 A1779039507 --> A1779033009 A1779039607 --> A1779033109 A1779039707 --> A1779033209

our customers, Mercedes-Benz USA, LLC ("MBUSA") is extending the warranty coverage on the engine thermostat (including software update) installed in certain Model Year ("MY") vehicles (with engines M176, M177, M178) listed below from the original New Vehicle Limited Warranty of 4 years/50,000 miles to 15 years/150,000 miles (whichever occurs first), due to the following condition: In the affected vehicles, the sealing ring in the engine thermostat could detach, causing a delay in the heating of the engine coolant. This may also cause the check engine Malfunction Indicator Lamp ("MIL") to illuminate. Please follow the work instructions added to this NCU to remedy the issue. Please be advised that all repairs being claimed under this extended warranty must have a quick test uploaded with the following fault code information and may be audited. P012800 - Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature) All repairs found to be functioning properly or without proper documentation will be returned and the claim debited in full. Only the following damage codes and parts may be claimed for the aforementioned repairs: Damage Code(s): 20102 - Insert, coolant thermostat o 52 - Does not operate correctly o 41 - Hard closing 20103 - Housing/cover, coolant thermostat o 73 - Electrical fault 2030T - Heating element, coolant thermostat o 53 - Insufficient effect/power o 73 - Electrical fault

GT, AMG SL (206, 192, 232 platform) vehicles, the electric engine mount control unit software does not correspond to the latest series production configuration. In this case, a short circuit may be incorrectly detected, and the engine mounts can de-energize. This in turn could lead to changes in the vehicles dynamics and noise complaints from the customer. MBUSA will conduct a service campaign. An authorized Mercedes-Benz dealer will update the electric engine mount control unit software.

There is no hindrance to performance of vehicle. Tension in the lower engine compartment lining at the factory, with additional weight of vehicle body after complete build of the vehicle. Implement screw connection of the shear area/the lower engine compartment lining (vehicle compressed) with 14 Nm and taking into account the correct screw sequence (see attachment).

Locking hooks may require adjustment or Header Bow does not reach intermediate position B. Calibration of the Header Bow may be required Analysis to identify the remedy: If available, perform a software update of the rear passenger compartment control unit (N22/6). Then attempt operation of Soft Top. If fault continue to be present: Check the fault codes in N22/6 (Rear passenger compartment control unit) in the quick test. B196277 and/or B196377: Perform teach-in process. Select "YES" for the question regarding part exchange. If fault message appears following the process, continue with A. If no fault message appears, check the function. If the soft top does not function, continue with B. B228646 and/or B228654: Execute rear passenger compartment control unit (N22/6) control unit log and continue with step A. B180013 and/or B180071 and/or B180077: Check the wiring at the engine of the soft top lock in the top of the soft top as well as the Hall sensor above. If nothing visually can be seen: Replace electric motor A2329066500 and Hall sensor. If remedy is successful: Processing is complete; otherwise, continue with step B. If none of the specified fault codes occurs in the quick test, continue with step B.

There is no effect to braking capability. Remedy >> Refer to LI42.10-P-063502. If bedding in the brakes does not remedy the issue: a) If the noises are coming from the front axle => Affix linings with biadhesive film (see attachments for front axle) 1. Remove brake linings of front axle 2. Cleaning all contact points on brake lining and brake caliper/carrier 3. Apply an adhesive film to the backplate of the piston-side brake lining (only in the area of the center piston) 4. Position and affix brake pad foil as per the attachment (clean bonding surface) 5. After installing the brake linings, actuate the brake for 30 seconds b) If the noises are coming from the rear axle => Grease the lining as per the specification (see attachments for rear axle) 1. Remove brake pads of rear axle 2. Cleaning all contact points on brake lining and brake caliper/carrier 3. Grease contact points (red areas) between brake lining and guide of brake caliper with heat-resistant lubricating paste A001 989 87 51 4. Be absolutely certain to not allow paste between friction surfaces of the pad and disc! If no remedy is possible with these measures, please create a TIPS case.

Roadster (232 platform) vehicles, a leak in the engine intake manifold may be erroneously detected and potentially cause the check engine Malfunction Indicator Lamp (MIL) to illuminate. MBUSA will conduct an Emission Service Campaign. An authorized Mercedes-Benz dealer will update the engine control unit software on the affected vehicles.

platform) vehicles, the software of the left and right rear axle steering control unit does not meet current production specifications. As a result, a rear axle steering fault message might sporadically appear in the instrument cluster during engine start. The vehicle continues to be operational and safe to drive should the message appear. What Were Doing MBUSA will conduct a service campaign. An authorized Mercedes-Benz dealer will update the software on the left and right rear axle steering control unit.

Fault codes in electric power steering control unit (N68). Fault code details/freeze frame data of the fault codes show the following values: P063500: "The electric power steering has a malfunction. There is a component fault." - Mon_ID 40 P063547: "The electric power steering has a malfunction. There is a runtime error." - Mon_ID 33 P063509: "The electric power steering has a malfunction. _" - Mon_ID 938 Cause Software error when starting the electric power steering control unit (N68). Remedy Perform software update of electric power steering, control unit N68. Please also observe the guided check in XENTRY Diagnosis!

Remedy New software available as of calendar week 41 / 2022 Flash affected control units with XENTRY. Control unit N68/9 HAL-L (RAS232L) Control unit N68/10 HAL-R (RAS 323R)

Cause Under analysis. Remedy To narrow down the cause, first of all remove the door trim. If the noise continues to occur even with the door trim removed, then continue the diagnosis working towards the speaker and if necessary, create a TIPS case with an informative video as an attachment. Note: Please refer to this document in the warranty claim and, once diagnosis is completed, select the damage code depending on the component part that is causing the issue. If the noise stops when the door trim is removed, please proceed in accordance with LI72.10P067691. Information: In this case, do not use a damage code for the speakers in the warranty claim!

with one of the following scenarios: Flashing without a speed limit (" "). Flashing when current vehicle speed is under speed limit. Flashing between US speed limit symbol and European speed limit symbol. NOTE: Verify that the concern falls under one of the attachment videos. If not, then it is outside of the scope of this LI. This also does not cover "Traffic Sign Inoperative" messages on the instrument cluster. Cause There are two identified reasons for this concern: 1. Country code information stored incorrectly at a particular geographic latitude range. 2. Incorrect reference data when the vehicle is started and a GPS signal is not immediately available. Remedy Update head unit software to latest version and the recheck function in the same location. NOTE: Updated head unit software for AMG's has NOT been released yet. ETA 12/2026. If vehicle is still exhibiting one of the symptoms as described exactly as in the complaint section or as shown in the video attachments, open a TIPS case to the Body/Chassis/Entertainment inbox with the following: Video of the concern. Exact location (latitude and longitude is best)

with one of the following scenarios: Flashing without a speed limit (" "). Flashing when current vehicle speed is under speed limit. Flashing between US speed limit symbol and European speed limit symbol. NOTE: Verify that the concern falls under one of the attachment videos. If not, then it is outside of the scope of this LI. This also does not cover "Traffic Sign Inoperative" messages on the instrument cluster. Cause There are two identified reasons for this concern: 1. Country code information stored incorrectly at a particular geographic latitude range. 2. Incorrect reference data when the vehicle is started and a GPS signal is not immediately available. Remedy Update head unit software to latest version and the recheck function in the same location. If vehicle is still exhibiting one of the symptoms as described exactly as in the complaint section or as shown in the video attachments, open a TIPS case to the Body/Chassis/Entertainment inbox with the following: Video of the concern. Exact location (latitude and longitude is best)

Cause Under analysis. Remedy To narrow down the cause, first of all remove the door trim. If the noise continues to occur even with the door trim removed, then continue the diagnosis working towards the speaker and if necessary, create a TIPS case with an informative video as an attachment. Information: Please refer to this document in the warranty claim and, after completing diagnosis, select the damage code corresponding to the component part that caused the problem. If the noise stops when the door trim is removed, please proceed in accordance with LI72.10-P-067691. Information: In this case, do not use a damage code for the speakers in the warranty claim!

with one of the following scenarios: Flashing without a speed limit ("- -"). Flashing when current vehicle speed is under speed limit. Flashing between US speed limit symbol and European speed limit symbol. NOTE: Verify that the concern falls under one of the attachment videos. If not, then it is outside of the scope of this LI. This also does not cover "Traffic Sign Inoperative" messages on the instrument cluster. Cause There are two identified reasons for this concern: 1. Country code information stored incorrectly at a particular geographic latitude range. 2. Incorrect reference data when the vehicle is started and a GPS signal is not immediately available. Remedy Do not replace parts. Please open a TIPS case to the Body/Chassis/Entertainment inbox but read the below carefully: The vehicle must be exhibiting the concern as shown in the attachment videos. The vehicle DOES NOT need to be at the dealer, nor does it need to be brought into the dealership. If the geographic location is known, it is very important that it is provided. Provide any pictures or videos, if available. A new software for the head unit is scheduled for tentative release in Q3 2026.

2. Service confirmation is not possible because "Perform vehicle handover" is displayed. This cannot be carried out. 3. The service display in the instrument cluster permanently displays 365 days (remaining time) and does not change. Cause Routine change in the software in N133/1 (instrument cluster) or A26/17 (MBUX multimedia system and instrument cluster (head unit)). Vehicle handover was not performed. Remedy For model series 290 AMG up to and including AEJ 22 and model series 167 up to and including AEJ 21/2, the following applies: Manually commission already-installed instrument cluster control unit N133/1 and then perform special procedure to re-initialize ASSYST data in N127 powertrain control unit. The following applies to model series 167 from AEJ 22/1 onward, 192 AMG, 206, 214, 223, 232 AMG, 236, 254, 290 AMG from AEJ 23 onward, 294, 295, 296, 297 and 465: Reinitialize ASSYST Plus under Adaptations Teach-in processes ASSYST PLUS in control unit N133/1 (instrument cluster) or A26/17 (MBUX multimedia system and instrument cluster (head unit)), and then perform the special procedure for reinitializing the ASSYST data in powertrain control unit N127.

when using flashing method ethernet to USB-C. Until further notice, please flash via VCI only.

2. Service confirmation is not possible because "Perform vehicle handover" is displayed. This cannot be carried out. 3. The service display in the instrument cluster permanently displays 365 days (remaining time) and does not change. Cause Routine change in the software in N133/1 (instrument cluster) or A26/17 (MBUX multimedia system and instrument cluster (head unit)). Vehicle handover was not performed. Remedy For model series 290 AMG up to and including AEJ 22 and model series 167 up to and including AEJ 21/2, the following applies: Manually commission already-installed instrument cluster control unit N133/1 and then perform special procedure to re-initialize ASSYST data in N127 powertrain control unit. For model series 167 as of AEJ 22/1, 192 AMG, 206, 214, 232 AMG, 236, 254, 290 AMG as of AEJ 23, 294, 295, 296, 297 and 465, the following applies: Reinitialize ASSYST Plus under Adaptations Teach-in processes ASSYST PLUS in control unit N133/1 (instrument cluster) or A26/17 (MBUX multimedia system and instrument cluster (head unit)), and then perform the special procedure for reinitializing the ASSYST data in powertrain control unit N127.

2. Service confirmation is not possible because "Perform vehicle handover" is displayed. This cannot be carried out. 3. The service display in the instrument cluster permanently displays 365 days (remaining time) and does not change. Cause Routine change in the software in N133/1 (instrument cluster) or A26/17 (MBUX multimedia system and instrument cluster (head unit)). Vehicle handover was not performed. Remedy For model series 290 AMG up to and including AEJ 22 and model series 167 up to and including AEJ 21/2, the following applies: Manually commission already-installed instrument cluster control unit N133/1 and then perform special procedure to re-initialize ASSYST data in N127 powertrain control unit. For model series 167 as of AEJ 22/1, 192 AMG, 206, 214, 232 AMG, 236, 254, 290 AMG as of AEJ 23, 294, 295, 296, 297 and 465, the following applies: Reinitialize ASSYST Plus under Adaptations Teach-in processes ASSYST PLUS in control unit N133/1 (instrument cluster) or A26/17 (MBUX multimedia system and instrument cluster (head unit)), and then perform the special procedure for reinitializing the ASSYST data in powertrain control unit N127.

with one of the following scenarios: Flashing without a speed limit ("- -"). Flashing when current vehicle speed is under speed limit. Flashing between US speed limit symbol and European speed limit symbol. NOTE: Verify that the concern falls under one of the attachment videos. If not, then it is outside of the scope of this LI. This also does not cover "Traffic Sign Inoperative" messages on the instrument cluster. Cause There are two identified reasons for this concern: 1. Country code information stored incorrectly at a particular geographic latitude range. 2. Incorrect reference data when the vehicle is started and a GPS signal is not immediately available. Remedy No TIPS case is necessary. Do not replace parts. A new software for the head unit is scheduled for tentative release in Q2 2026.

the vehicle is displayed as being in the middle of the ocean. Note: No relevant DTC is displayed during the quick test. Cause The GNSS antenna is not correctly inserted at the GNSS connection (see picture in the attachment) in the head unit (A26/17). Remedy Insert the plug into the GNSS connection and ensure that the plug has engaged correctly.

with one of the following scenarios: Flashing without a speed limit ("- -"). Flashing when current vehicle speed is under speed limit. Flashing between US speed limit symbol and European speed limit symbol. Cause There are two identified reasons for this concern: 1. Country code information stored incorrectly at a particular geographic latitude range. 2. Incorrect reference data when the vehicle is started and a GPS signal is not immediately available. Remedy No TIPS case is necessary. Do not replace parts. A new software for the head unit is scheduled for tentative release in Q4 2025 to early Q1 2026 to rectify concern.

the vehicle is displayed as being in the middle of the ocean. Note: No relevant DTC is displayed during the quick test. Cause The GNSS antenna is not correctly inserted at the GNSS connection (see picture in the attachment) in the head unit (A26/17). Remedy Insert the plug into the GNSS connection and ensure that the plug has engaged correctly.

with one of the following scenarios: Flashing without a speed limit ("- -"). Flashing when current vehicle speed is under speed limit. Flashing between US speed limit symbol and European speed limit symbol. Cause There are two identified reasons for this concern: 1. Country code information stored incorrectly at a particular geographic latitude range. 2. Incorrect reference data when the vehicle is started and a GPS signal is not immediately available. Remedy No TIPS case is necessary. Do not replace parts. A new software for the head unit is scheduled for tentative release in Q4 2025 to early Q1 2026 to rectify concern.

instrument cluster software does not correspond to current production specifications. MBUSA will conduct an OTA service campaign. The instrument cluster will receive an OTA software update that increases the robustness and system stability for the instrument cluster as well as the head-up display. Additionally, the software update allows for the Automatic Lane Change function to be installed via a subsequent software update and modifies the acoustic warning of the Traffic Sign Assist function. Remote software updates are automatically downloaded and installed in the customers vehicle free of charge and do not require a dealer visit.

Cause Without active navigation (code 365), MBUX cannot assign and install the regional database of the station logos. Remedy There is no remedy available. The function is not supported and therefore considered normal operation.

AMG GT, EQE, EQS, G-CLASS, GLB, GLC, GLE, GLS, S-CLASS, AMG SL (206, 118, 243, 290, 192, 294, 295, 296, 297, 465, 247, 254, 167, 223, and 232 platform) vehicles, the MBUX multimedia system does not correspond with the latest series production configuration. The MBUX multimedia system control unit will receive an OTA software update. MBUSA will conduct an OTA service campaign. Remote software updates are automatically downloaded and installed in the customers vehicle free of charge and do not require a dealer visit. No customer letter will be mailed for this OTA software update.

the vehicle is displayed as being in the middle of the ocean. Note: In the quick test, no relevant DTC is displayed for this. Cause The GNSS antenna is not correctly inserted at the GNSS connection (see picture in the attachment) in the head unit (A26/17). Remedy Insert the connector into the GNSS connection and ensure that the connector has engaged correctly and is fully seated.

EQE, EQS, G-Class, GLA, GLB, GLC, GLE, GLS, GT, S-Class, and SL (206, 118, 243, 294, 296, 465, 247, 254, 167, 192, 223, and 232 platform) vehicles, the MBUX multimedia system does not correspond with the latest series production configuration. The MBUX multimedia system control unit will receive an OTA software update. MBUSA will conduct an OTA service campaign. Remote software updates are automatically downloaded and installed in the customers vehicle free of charge and do not require a dealer visit. No customer letter will be mailed for this OTA software update.

control unit for telematics services (RAMSES)", the Digital Extras (previously Mercedes me) cannot be activated. The DTC B15CE00 is active or active+saved. In vehicles with "N112/9 - control unit for telematics services (HERMES)": The message "SOS - service not activated" permanently lights up in the instrument cluster AND the actual value "Error when replacing certificate (CEP.36)" is displayed in the actual values for the activation status under "Registration status" (see picture 1). In the control unit log of the "N112/9 - control unit for telematics services (HERMES)", the registration error "CEP Invalid VIN/UniqueID combination" is displayed. In vehicles with "N112/2 - control unit for telematics services (RAMSES)": The actual value "Error when replacing certificate (CEP.36)" is displayed in the actual values for the activation status under "Registration status" (see picture 1). In the control unit log of the "N112/2 - control unit for telematics services (RAMSES)", the registration error "CEP_ VIN_UNIQUEID_INVALID" is displayed. The emergency call is not impaired. Cause In the event of a control unit replacement, sporadic problems in the back end could result in data from the new control unit not being updated in the back end system. Remedy Please create a TIPS case. In some cases, the problem rectifies itself on its own after a little while.

control unit as "active and stored": B19B313 - Antenna 1 open load B19B413 - Antenna 2 open load B19B513 - Antenna 3 open load B19B613 - Antenna 4 open load Cause Antenna amplifier Remedy Replace the antenna amplifier.

"Perform vehicle handover" in the workshop menu to start the maintenance computer for service A/B cannot be carried out. 2. Service confirmation is not possible because "Perform vehicle handover" is displayed. This cannot be carried out. Routine change in software in instrument cluster N133/1. Vehicle handover has not taken place. First manually commission the already installed instrument cluster control unit N133/1 and then perform the special procedure to re-initialize ASSYST data in powertrain control unit N127. NOTE: The information contained in this document is intended for use by trained, professional technicians with the knowledge to properly and safely perform diagnosis and repairs on Mercedes-Benz vehicles, using Mercedes-Benz approved tools and equipment. It informs service technicians about conditions that could occur in certain vehicles and provides information that could assist in proper vehicle diagnosis, service, or repair. It does not indicate that a defect is present in any vehicle referenced in this document nor does it imply warranty coverage. DO NOT assume that a symptom or condition, or a described cause of a symptom or condition, affects any particular vehicle or groups of vehicles, or that a described repair applies to any particular vehicle or groups of vehicles. There can be multiple causes resulting in the same or similar symptoms or conditions described in this document, and trained professional service technicians must use their diagnostic skills to make evaluations on a case-by-case basis. The information contained in this document does not guarantee warranty coverage nor does it extend the vehicles warranty in any way.

21-23 C-Class, S-Class, SL, EQS (206, 223, 232, 297 platform) vehicles. The vehicles will not be visible or flagged in VMI or EVA. Mercedes-Benz AG, the manufacturer of Mercedes-Benz vehicles, has determined that on certain MY21-23 C-Class, S-Class, SL, and EQS vehicles (206, 223, 232, 297 platform), the MBUX System software does not correspond with the latest series production configuration. The MBUX control unit will receive an OTA update that includes functional improvements and new features such as: Dolby Atmos, video streaming, personalized images on the front passenger display, and additional commands for the MBUX Voice Assistant. MBUSA will conduct an OTA service campaign. Remote software updates are automatically downloaded and installed in the customers vehicle free of charge and do not require a dealer visit. No customer letter will be mailed for this OTA software update.

EQE, EQS, GLC, GLE, GLS, S-Class, SL (206, 294, 295, 296, 297, 254, 167, 223, 232 platform) vehicles, the MBUX System software does not correspond with the latest series production configuration. The MBUX control unit will receive an OTA update that includes functional improvements and new features such as: Dolby Atmos, video streaming, personalized images on the front passenger display, and additional commands for the MBUX Voice Assistant. MBUSA will conduct an OTA service campaign. Remote software updates are automatically downloaded and installed in the customers vehicle free of charge and do not require a dealer visit. No customer letter will be mailed for this OTA software update.

C-Class, EQE, EQS, GLC, S-Class, and SL (206, 294, 295, 296, 297, 254, 223, and 232 platform) vehicles, there is a new software release for the MBUX Infotainment system. This OTA update includes functional improvements and eliminates software errors for a better entertainment experience. MBUSA will conduct an OTA service campaign. Remote software updates are automatically downloaded and installed in the customers vehicle free of charge and do not require a dealer visit. A letter will be mailed to included customers informing them of this software update.

The fault code B129C00 is stored in the control unit log. The message occurs in particular after the vehicle has been non-operational for an extended period of time; the message then disappears of its own accord after a few minutes. No functional limitation to the emergency call system is to be expected. Software error in N112/9 control unit for telematics services (HERMES). Software update for control unit N112/9 - Control unit for telematics services (HERMES) to software release E522.8. If, against expectations, the erroneous display of the message in the instrument cluster continues to occur following the update, please create a TIPS case.

If the telephone connects with the head unit again, the call log may not be sent. Current software release for the A26/17 - MBUX multimedia system (Head unit) Currently there is no remedy available. Replacing the hardware will not resolve the symptom. New software for the A26/17 - MBUX multimedia system (Head unit) will be made available with software version E444.x (scheduled for Q4/2023)

Cause There may be interruptions to WiFi as a result of external interference. This is particularly observed around toll bridges. Remedy There is currently no remedy and replacing hardware does not resolve the problem. An alternative option would be to use Apple CarPlay wired. In the FUP4 variant of the head unit software (Q1/2024), stability improvements have been made to the Wi-Fi connection.

Cause Previously available MBUX software release. Remedy A new software remedy is currently available. Please update the head unit software to version E329.5 or newer.

The MBUX Display states &#34;Apple Carplay could not be started. Your device has been connected as a bluetooth phone&#34; Ursache Current MBUX Multimedia System (A26/17) software Abhilfe Updated MBUX Multimedia System (A26/17) software will be released in Q4 2022

NOTE: Although the symptom is similar to a tire or wheel vibration, it is usually readily noticeable that it is distinctly different if it happens at all times or only while braking. Cause Although the cause of the vibration is most likely due to excessive lateral runout on the rotor or hub/wheel bearing, the system as a whole needs to be checked for other possible contributors. 1. Prior collision damage. 2. Excessive vehicle sitting times without rotating components. 3. Wheel bearing/hub lateral runout. 4. Wheel mating interface has been overtightened (did not follow WIS torque procedures). 5. Mating interfaces have been excessively modified (painted, gouged, bent, etc...). Remedy Read through the entire attached worksheet prior to performing. After performing, please review the final page and perform work accordingly. NOTE: This document is not preauthorization or otherwise dealing with warranty. This is intended for diagnostic purposes only. If there are any questions on how to proceed OR The work sheet has been performed and the vehicle has returned with the same concern. Please perform the measurements as seen in the worksheet again and open a TIPS case to the Body, Chassis, and Entertainment team.

generated by a micromovement on the contact surface between the rim and the brake disk (wheel bolt group) and may be intensified by potential soiling. The more lightweight rim (AMG forged rim) transmits the noise louder; in the case of cast rims, the noise is generally not perceptible. This is not a technical defect, but rather a complaint concerning comfort. Safe operation of the vehicle is ensured at all times. Remedy Important note: The operations described below do not represent a permanent remedy in every case. The noise may reoccur again after an indefinite period of time; sanding the rims with abrasive media multiple times is not permissible. Only cleaning using the Hazet tool 4960-160 (recommendation) can be performed without any concerns each time the wheel is changed or if the complaint reoccurs. Replacing the parts (rim, wheel bolts, wheel bearings, wheel hub, brake disk) is not expedient in the event of this complaint. ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Clean the components of the wheel bolt connection according to the WIS instructions Sand down the rim and brake disk bowl by performing the following steps: Manually sand rim (old design only) in area of water drain bores (Figure 1; item A), approx. 1.5 cm left and right of water drain bore (Figure 2) Note: Use abrasive paper with grit size 80. The grooving in this area should no longer be visible (sand down approx. 0.1-0.2mm) Also sand brake disk bowl using emery cloth or abrasive paper with a grain size of 120 For vehicles equipped with the AMG ceramic brake system (B07), abrasive paper may not be used for cleaning on the brake disk side Note: Do not use any cleaning agent when cleaning on the rim side. Cleaning using abrasive paper with a grain size of 80 will suffice. Do not apply any grease, lubricant or paste after cleaning The brake disk bowl should be "bare metal" in the area of the imprints made by the hole (Figure 3)

Creaking/crackling noises from the area of the wheel bearing on the front axle when cornering/ maneuvering. Sound file attached for comparison. MUST match noise for proper diagnosis. NOTE: Steering functionality is not affected. Cause Contact area between wheel bearing and steering knuckle. See also: LI35.30-P-058566 (Throttle Lift-Off Noise - Rear) LI33.30-P-056665 (Throttle Lift-Off Noise - Front) LI40.10-P-059248 (Wheel cracking noise when cornering) Remedy 1. Perform Operation A and evaluate by testing vehicle. 2. If noise is still present after re-testing: If 192/232 chassis, verify FIN is in the listed range below in "Operation B" and perform. If not 192/232 chassis or vehicle is a 192/232 not in the listed FIN range, additional verifications of where the noise is coming from are needed. Use multiple channel NVH method to narrow down location. Verify the LI's listed above were completed or if there are other similar noises associated with the chassis (Example: 192/232 also has under panel noises and an associated LI). Operation A: 1. Clean contact surfaces of wheel bearing and steering knuckle with brake cleaner as seen in the attached pictures. NOTE: The front area of the wheel bearing and the seals must not come into contact with the cleaner, otherwise, the sealing rings will be damaged. 2. Clean threads of wheel bearing mounting. 3. Thinly coat contact surfaces of wheel bearing, steering knuckle, and axle mating face with Molykote (annular joint grease). See the attached steering knuckle and wheel hub pictures for reference. NOTE: Axle mating face greasing is also covered in LI35.30-P-058566 and LI33.30-P-056665. Operation B (Only applies to 192 and 232 in listed FIN range): Only affects vehicles up to FIN end number: Model series 192: xxx xxx xx 002 876 Model series 232: xxx xxx xx 022 312 1. Replace steering knuckle. 2. Wheel bearings do not need to be replaced.

Creaking/crackling noises from the area of the wheel bearing on the front axle when cornering/ maneuvering. Sound file attached for comparison. MUST match noise for proper diagnosis. NOTE: Steering functionality is not affected. Cause Contact area between wheel bearing and steering knuckle. See also: LI35.30-P-058566 (Throttle Lift-Off Noise - Rear) LI33.30-P-056665 (Throttle Lift-Off Noise - Front) LI40.10-P-059248 (Wheel cracking noise when cornering) Remedy 1. Perform Operation A and evaluate by testing vehicle. 2. If noise is still present after re-testing: If 192/232 chassis, verify FIN is in the listed range below in "Operation B" and perform. If not 192/232 chassis or vehicle is a 192/232 not in the listed FIN range, additional verifications of where the noise is coming from are needed. Use multiple channel NVH method to narrow down location. Verify the LI's listed above were completed or if there are other similar noises associated with the chassis (Example: 192/232 also has under panel noises and an associated LI). Operation A: 1. Clean contact surfaces of wheel bearing and steering knuckle with brake cleaner (see areas marked blue in pictures "2.jpg" and "3.jpg"). NOTE: The front area of the wheel bearing and the seals must not come into contact with the cleaner, otherwise, the sealing rings will be damaged. 2. Clean threads of wheel bearing mounting. 3. Thinly coat contact surfaces of wheel bearing, steering knuckle, and axle mating face with Molykote (annular joint grease) (see areas marked blue in pictures "2.jpg" and "3.jpg"). NOTE: Axle mating face greasing is also covered in LI35.30-P-058566 and LI33.30-P-056665. Operation B (Only applies to 192 and 232 in listed FIN range): Only affects vehicles up to FIN end number: Model series 192: xxx xxx xx 002 876 Model series 232: xxx xxx xx 022 312 1. Replace steering knuckle. 2. Wheel bearings do not need to be replaced.

Creaking/crackling noises from the area of the wheel bearing on the front axle when cornering/ maneuvering. Sound file attached for comparison. MUST match noise for proper diagnosis. NOTE: Steering functionality is not affected. Cause Contact area between wheel bearing and steering knuckle. See also: LI35.30-P-058566 (Throttle Lift-Off Noise - Rear) LI33.30-P-056665 (Throttle Lift-Off Noise - Front) LI40.10-P-059248 (Wheel cracking noise when cornering) Remedy 1. Perform Operation A and evaluate by testing vehicle. 2. If noise is still present after re-testing: If 192/232 chassis, verify FIN is in the listed range below in "Operation B" and perform. If not 192/232 chassis or vehicle is a 192/232 not in the listed FIN range, additional verifications of where the noise is coming from are needed. Use multiple channel NVH method to narrow down location. Verify the LI's listed above were completed or if there are other similar noises associated with the chassis (Example: 192/232 also has under panel noises and an associated LI). Operation A: 1. Clean contact surfaces of wheel bearing and steering knuckle with brake cleaner (see areas marked blue in pictures "2.jpg" and "3.jpg"). NOTE: The front area of the wheel bearing and the seals must not come into contact with the cleaner, otherwise, the sealing rings will be damaged. 2. Clean threads of wheel bearing mounting. 3. Thinly coat contact surfaces of wheel bearing, steering knuckle, and axle mating face with Molykote (annular joint grease) (see areas marked blue in pictures "2.jpg" and "3.jpg"). NOTE: Axle mating face greasing is also covered in LI35.30-P-058566 and LI33.30-P-056665. Operation B (Only applies to 192 and 232 in listed FIN range): Only affects vehicles up to FIN end number: Model series 192: xxx xxx xx 002 876 Model series 232: xxx xxx xx 022 312 1. Replace steering knuckle. 2. Wheel bearings do not need to be replaced.

generated by a micromovement on the contact surface between the rim and the brake disk (wheel bolt group) and may be intensified by potential soiling. The more lightweight rim (AMG forged rim) transmits the noise louder; in the case of cast rims, the noise is generally not perceptible. This is not a technical defect, but rather a complaint concerning comfort. Safe operation of the vehicle is ensured at all times. Remedy Important note: The operations described below do not represent a permanent remedy in every case. The noise may reoccur again after an indefinite period of time; sanding the rims with abrasive media multiple times is not permissible. Only cleaning using the Hazet tool 4960-160 (recommendation) can be performed without any concerns each time the wheel is changed or if the complaint reoccurs. Replacing the parts (rim, wheel bolts, wheel bearings, wheel hub, brake disk) is not expedient in the event of this complaint. Clean the components of the wheel bolt connection according to the WIS instructions Sand down the rim and brake disk bowl by performing the following steps: Manually sand rim (old design only) in area of water drain bores (Figure 1; item A), approx. 1.5 cm left and right of water drain bore (Figure 2) Note: Use abrasive paper with grit size 80. The grooving in this area should no longer be visible (sand down approx. 0.1-0.2mm) Also sand brake disk bowl using emery cloth or abrasive paper with a grain size of 120 For vehicles equipped with the AMG ceramic brake system (B07), abrasive paper may not be used for cleaning on the brake disk side Note: Do not use any cleaning agent when cleaning on the rim side. Cleaning using abrasive paper with a grain size of 80 will suffice. Do not apply any grease, lubricant or paste after cleaning The brake disk bowl should be "bare metal" in the area of the imprints made by the hole (Figure 3)

Sound file attached for comparison. NOTE: Steering functionality is not affected. For 192 and 232: Only affects vehicles in the below FIN range. FIN range up to: Model series 192: xxx xxx xx 002 876 Model series 232: xxx xxx xx 022 312 Cause Contact area between wheel bearing and steering knuckle. See also: LI35.30-P-058566 (Axle Half Shaft noise when changing direction - Front) LI33.30-P-056665 (Axle Half Shaft noise when changing direction - Rear) LI40.10-P-059248 (Wheel cracking noise when cornering) Remedy 1. Perform Operation A and evaluate by testing vehicle. 2. If noise is still present, perform Operation A again. 3. If noise is still present after re-testing, perform Operation B. Operation A: 1. Clean contact surfaces of wheel bearing and steering knuckle with brake cleaner (see areas marked blue in pictures "2.jpg" and "3.jpg"). NOTE: The front area of the wheel bearing and the seals must not come into contact with the cleaner, otherwise, the sealing rings will be damaged. 2. Clean threads of wheel bearing mounting. 3. Thinly coat contact surfaces of wheel bearing, steering knuckle, and axle mating face with Molykote (annular joint grease) (see areas marked blue in pictures "2.jpg" and "3.jpg"). NOTE: Axle mating face greasing is also covered in LI35.30-P-058566 and LI33.30-P-056665. Operation B (Only applies to 192 and 232 in listed FIN range above): 1. Replace steering knuckle. 2. Wheel bearings do not need to be replaced.

Sound file attached for comparison. NOTE: Steering functionality is not affected. For 192 and 232: Only affects vehicles up to FIN vehicle identification end number. If vehicle falls outside of FIN range, create a TIPS case. Model series 192: xxx xxx xx 002 876 Model series 232: xxx xxx xx 022 312 Cause Contact area between wheel bearing and steering knuckle. Remedy 1. Perform Operation A and evaluate by testing vehicle. 2. If noise is still present, perform Operation A again. 3. If noise is still present after re-testing, perform Operation B. Operation A: 1. Clean contact surfaces of wheel bearing and steering knuckle with brake cleaner (see areas marked blue in pictures "2.jpg" and "3.jpg"). NOTE: The front area of the wheel bearing and the seals must not come into contact with the cleaner, otherwise, the sealing rings will be damaged. 2. Clean threads of wheel bearing mounting. 3. Thinly coat contact surfaces of wheel bearing and steering knuckle with Molykote (annular joint grease) (see areas marked blue in pictures "2.jpg" and "3.jpg"). Operation B: 1. Replace steering knuckle. 2. Wheel bearings do not need to be replaced.

Cause Due to its outlet openings, the headlamp is an "open system". This means that acidic gases, moisture, dirt and exhaust gases can penetrate into the headlamp. This can lead to the formation of condensation on the lens of the headlamp. The headlamps comply with all applicable US standards and regulations. Remedy Check housing cover of lamp unit for natural fogging or condensation as per LI82.10-P-078301. If a reduction in the degree of fogging is visible, the desiccant packs can be used once the condensation has completely evaporated. Note: Order service covers and desiccant packs based on the validity description. 1. Remove headlamps. 2. Remove all grommets from outlet openings. 3. Seal vent openings with sealing profile. Important: All openings must be sealed carefully for the pressure compensation diaphragm to work properly! 4. Remove existing service cover. 5. Place desiccant packs into the new service covers and bolt down (Picture_01). 6. Glue the new diaphragm onto the intended surface at the service cover (Picture_02). Note: The bonding surface must be clean and dry. 7. Attach service cover with desiccant pack at headlamp. 8. Install headlamp. To ensure that the desiccant pack (absorption) acts effectively, the headlamp has to be air-sealed. Observe or check the following points for this: 1. Seals at the central connector must all be present and correctly fitted (Picture_03). 2. The new transparent diaphragm must be correctly bonded (Picture_04). 3. Check headlamp housing for any external damage.

Sound file attached for comparison. NOTE: Steering functionality is not affected. For 192 and 232: Only affects vehicles up to VIN vehicle identification end number. If vehicle falls outside of VIN range, create a TIPS case. Model series 192: xxx xxx xx 182881 Model series 232: xxx xxx xx 182883 Cause Contact area between wheel bearing and steering knuckle. Remedy 1. Perform Operation A and evaluate by testing vehicle. 2. If noise is still present, perform Operation A again. 3. If noise is still present after re-testing, perform Operation B. Operation A: 1. Clean contact surfaces of wheel bearing and steering knuckle with brake cleaner (see areas marked blue in pictures "2.jpg" and "3.jpg"). NOTE: The front area of the wheel bearing and the seals must not come into contact with the cleaner, otherwise, the sealing rings will be damaged. 2. Clean threads of wheel bearing mounting. 3. Thinly coat contact surfaces of wheel bearing and steering knuckle with Molykote (annular joint grease) (see areas marked blue in pictures "2.jpg" and "3.jpg"). Operation B: 1. Replace steering knuckle. 2. Wheel bearings do not need to be replaced.

Cause Due to the housing cover with pressure compensation diaphragm, the headlamps are a "closed system". This means that the headlamps are protected against acid gases, dirt and exhaust gas. However, moisture can still enter from two sources. Through absorption and desorption (the commonest cause) or through permeation. Moisture is either absorbed by the plastic material and, when the light source is switched on, it is released from the plastic by desorption, or the moisture penetrates through the plastic materials of the headlamp from outside (permeation). This can lead to the formation of condensation on the lens of the headlamp. The headlamps comply with all applicable US standards and regulations. Remedy Check headlamps for natural fogging or condensation as per LI82.10-P-078301. If a reduction in the degree of fogging is visible, the desiccant packs can be used once the condensation has completely evaporated. Note: Order service covers and desiccant packs based on the validity description. 1. Remove existing service cover with diaphragm (Picture_01 (1)). 2. Insert desiccant packs (Picture_01 (2)) into new service covers with diaphragm and seal with protective grille and bolt down (Picture_01 (3)). Note: One desiccant pack is required for each small service cover, and two desiccant packs are required for each large service cover. 3. Stick the supplied diaphragm onto the new service cover and attach at the headlamp. Note: The bonding surface must be clean and dry. 4. If the headlamp housing has an additional 2nd diaphragm, this must be covered over with masking tape. Note: The bonding surface must be clean and dry. To ensure that the desiccant pack (absorption) acts effectively, the headlamp has to be air-sealed. Observe or check the following points for this: 1. Seals at the central connector must all be present and correctly fitted (Picture_02). 2. The new transparent diaphragm must be correctly bonded (Picture_03). 3. Check headlamp housing for any external damage.

Remedy A. Expose the frame of the overhead control panel (cf. picture 1.1 - WIS AR82.20-P-1000S) B. Review the label of the overhead control panel (cf. picture 1.2, label on top of overhead control panel A0009008539). If a blue dot is present on the label, perform step C as an immediate measure. If the label does not have a blue dot: Order a new overhead control panel and perform step C as an immediate measure with the new component part C. Apply the foam pads (3 in total) as per picture 1.3.

control unit software for the trunk lid control does not correspond to the current series status. The new software update stabilizes the automatic trunk lid opening height when automatically opened. MBUSA will conduct an OTA service campaign. Remote software updates are automatically downloaded and installed in the customers vehicle free of charge and do not require a dealer visit. Mercedes-Benz is continuously updating the operating system of its vehicles for a better customer experience.

Adjustment of the side window panes Adjustment of the doors Influence of seals Influence of assembly Remedy If the wind noises only occur on one side: Perform comparison of right/left of the window and door adjustment If necessary, correct window and door adjustment according to WIS. For the windows, observe the insertion depth in the Z position and the Y position on the mirror triangle in particular. Check inner seal for deformations. To do so, observe attachment 1 and attachment 2. If a deformation (waviness) can be ascertained: Replace seal or reform back into place using heat and fix in place using cold. Check outer sealing rail to vertical sealing lip of the mirror triangle. To do so, observe attachment 3. If the sealing rail collides with the vertical sealing lip of the mirror triangle: Either route it such that it rests above the vertical sealing lip of the mirror triangle or shorten. Check external sealing rail for correct assembly. To do this, ensure that it is engaged into the three existing mounting straps on the door. See Attachment 4. Also ensure that the outer sealing rail is correctly positioned in the x-direction and closes off flush. See Attachments 5 and 6 for this. Also ensure during assembly that the outer sealing rail is inserted beneath the mirror triangle. See Attachment 7. Check the inner seal, especially in the mirror triangle area, for correct assembly. See Attachment 8.

In the area of the paneling section of the door, paint damage could be present (picture 1) and/or an abrasion point could be present at the door handle (picture 2). Cause The door handle could be installed too low in the y direction and/or the z direction (picture 3); as a result, the door handle could brush the door at the paneling section of the door. Remedy 1.) Loosen screws from bearing bracket (picture 4, step 1). 2.) Remove bearing bracket (see picture 4, step 2) from door. The door handle must be in pulled-in position. Open the affected door and push the door lock's rotary tumbler into the main catch. Lock the vehicle using the transmitter key so that the door handle is pulled in. Detach plug connector from bearing bracket (center slot). 3.) Paint over paint damage at door paneling (see picture 1) according to manufacturer specifications, using spot repair procedure if necessary. 4.) Loosen old assembly frame (picture 5, step 3). The assembly frame is bonded. Remove adhesive residue at front door. Bonding surfaces must be free of dust, oil, grease, wax, dirt residues and other adhesive components. Otherwise, this can lead to bonding problems. See "Parts" for part number of cleaning agent. 5.) Position new assembly frame (picture 5, step 3) at door. Remove protective film of tape at assembly frame beforehand. The assembly frame (picture 5, step 3) must have the same clearance all around the flange. 6.) Replace door handle, if an abrasion point (picture 2) is present. 7.) Screw in WITOL fasteners (picture 6) completely at mounting points of bearing bracket (picture 7, step 1) and align screws so that they are flush (picture 7, step 2). 8.) Position bearing bracket (picture 4, step 2). The door handle must have the same clearance all around in relation to the paneling section of the door (picture 8). 9.) Press the bearing bracket firmly against the paneling of the door and tighten the screws (picture 4, step 1) (=> torque: 6 Nm). 10.) Check the positioning of the bearing bracket. If necessary, loosen the screws slightly, readjust the bearing bracket slightly, then retighten the screws (=> torque: 6 Nm).

Washer fluid reservoir itself. 2. Seal on washer fluid pump/washer fluid reservoir. 3. Washer fluid pump. 3.1. Distributor housing leaks. 3.2. Pump fitting leaks. 3.3. Washer fluid hose cannot be snapped into place on pump fitting. 3.4. Washer fluid hose will not stay on pump fitting, although connector OK. 4. Washer fluid line. 4.1 Connector will not stay on pump fitting because it is broken. 4.2 Sealing ring in connector missing. 4.3 Sealing ring in connector fitted, but deformed and therefore leaks. 4.4 Damage to washer line by animal. 5. Seal on heating washer fluid reservoir/washer fluid reservoir. Remedy Replace defective component parts only. Do not replace any adjacent component parts that are intact. Note: Repair kits for washer line hoses do exist to allow patches for line damage.

In contrast to a leaky headlamp, physical fogging does not result in a technical impairment of the headlamp. A leak test must be performed to determine if physical fogging exists or if the headlamp is leaky. Remedy In advance, observe LI82.10-P-078301 "Headlamps or Front Fog Lamps Leaking or Fogged". 1. Prepare headlamp/check for external damage: For headlamps with a closed system 1. Check the headlamps for any external damage and check also for correct seating of the Gore-diaphragm/correct latching of the cover caps. 2. If the headlamp exhibits any external damage, replace the headlamp. For headlamps with an open system 1. Check the headlamps for any external damage and seal off the vent then make sure the cover caps are latched correctly into place. 2. If the headlamp exhibits any external damage, replace the headlamp. Note: A headlamp with external damage is not a warranty or goodwill case. 2. Leak test of headlamp with overpressure: Connect test adapter to pressure tester. (Figure 1) Check test adapter for leak tightness. To do so, connect plug and coupling (picture 2) and apply a maximum overpressure of 30 mbar. The pressure must remain constant. If the pressure does not remain constant, use a new adapter. Seal all the outlet openings using sealing compound and the given diaphragm with the plunger (picture 3). (Picture 4) Make allowance for the different headlamp variants here (there are different outlet openings). Check if the headlamp needs to be removed to gain access to the diagnostic socket on the headlamp housing. Plug the adapter onto the diagnostic socket on the headlamp housing. (Picture 5). Apply a maximum of 30 mbar overpressure to the headlamp housing. Note: If the maximum overpressure of 50 mbar is exceeded the headlamp seal will be damaged. If a pressure drop of less than 10 mbar is measured within 30 seconds, the headlamp is not leaky and the problem is down to natural physical fogging. If a pressure drop of more than 10 mbar is measured within 30 seconds, the headlamp is leaky. Note: The leaky position can be localized with the aid of soap suds. Replace any leaky headlamps. Note: Desiccant packs can be installed for headlamps that are not leaky. See: LI82.10-P-064766 Fogged headlamp, desiccant pack installed - open ventilation system LI82.10-P-078304 Fogged headlamp, desiccant pack installed - closed ventilation system

certain banjo bolts on the headlamp housing may cause corrosion on the body-in-white over the service life of the vehicle. MBUSA will conduct a service campaign. An authorized Mercedes-Benz dealer will retrofit the headlamp housing screws.

of the trunk control/tailgate control drive unit (M51/3). Faulty microswitch signal of trunk lock. In the event of a problem, the status of the trunk lock (picture 1) does not change during opening/closing of the trunk lid or tailgate. The function of the interior trunk release is not affected. Replace trunk lock (A85/5).

Software problems/window standardization B. Faulty/incorrectly calibrated GAK C. Faulty welding of the stop buffer of a stop screw

platform) vehicles, the software of the rear control unit may not meet current production specifications. Therefore, the possibility exists that the soft top may not close from the soft top open position. What Were Doing MBUSA will conduct a service campaign. An authorized Mercedes-Benz dealer will check and calibrate the roof frame outlet flap, if necessary.

Cause Accidental or unnoticed activation of the button to open the tailgate on the vehicle key. E.g. when stored in trouser pocket, handbag etc. Remedy As of the 6th generation, the vehicle key can be recoded so that the tailgate no longer opens as a result of a long press on the button, but by double-clicking on the button instead.

question is NOT the clearcoat peeling off. In the assembly process, too much primer has been applied to the paint or visible surfaces. Remedy NO replacement of parts is necessary, parts can be cleaned! 1. The seals around the areas of complaint will need to be, masked with tape. 2. Moisten a microfiber cloth with isopropyl alcohol and place it on the areas of complaint/spots for approx. 5 minutes to soak. 3. Clean/remove the spots carefully by firmly rubbing the area in a circular motion. When doing so, make sure not to damage the seals by rubbing too hard.

Cause Noises may come from one or more sleeves of the horn contact plate. Remedy Remove the horn contact plate and check the sleeves for noise; see attached video. If necessary, apply lubricant to the sleeves.

and play them with Windows Media Player. Cause Driving with summer tires in combination with low outside temperatures. At low outside temperatures or in wet conditions, a noise may be produced at the outer wheel on the front axle while maneuvering with sharp steering angles. Note: AMG vehicles with 4MATIC of model series 217 (without code 494) and model series 222 have a modified axle geometry compared with series production vehicles to provide more sporty handling. The problem cannot be remedied by changing the axle settings.

See arrow direction in attached pictures. Cause Slipped thrust bearing ring on the height adjustment. Remedy Install repair kit for height adjustment of the steering column. For tightening torque, see attachment.

cluster messages along with Tire Pressure Light on in Instrument Cluster. Cause Both systems are temporarily unavailable due to low tire pressures. An active tire pressure monitor light may result in some assistance features being temporarily unavailable until tire pressures are corrected. Remedy Check/adjust tire pressures and reset monitoring through the instrument cluster.

Note: There is no loss of vehicle functionality due to this complaint. Cause Software can cause a partial display on the ASCM. Remedy Please perform the following steps in the event of a total or partial display of the ASCM displays: 1. Perform a hard reset (disconnect power supply) of control unit A74/2 (ASCM) for 2 minutes. 2. Perform a software update of the A74/2 (ASCM), N145 (DRVU) and A26/17 (HU). 3. Reset the user profile via the head unit settings menu. (Full factory reset)

Note: There is no loss of vehicle functionality due to this complaint The complaint may occur when a new user profile is created in MBUX. The cause of the problem may be a fault in the DRVU software (N145/1). Please update the software in the AMG drive unit (N145) to the following level or newer. Software A0019024902. If a fault profile still occurs in the ASCM (A74/2) even with the correctly installed software (N145), please create a TIPS case and reference this LI.

There is a fault in the data memory. with fault freeze frame data "Mon_ID 320" in the "stored" status stored in the fault memory of control unit N68. No functional restrictions of the electric power steering or warning messages are visible. Faults occur in the event of a software update or when initializing the control unit for the electric power steering N68. The fault code can be ignored and the fault memory of the control unit for the electric power steering N68 can be deleted. It is not necessary to replace the electric power steering.

inoperable (see attached picture). Note: There is no loss of vehicle functionality due to this complaint Cause The complaint may occur when a new user profile is created in MBUX. Remedy Immediate measure: Perform a user data reset of the MBUX Multimedia System (settings -> system -> reset). Long-term measure: Updated AMG Drive Unit (N145/1) software is under development. NOTE: Do not replace parts for this complaint

with Easy Entry function). Cause Height adjustment moves to the top/bottom limit stop and jams.

existing stock must be returned to your facing PDC. The deadline for all dealer returns is no later than Thursday, July 23rd, 2026. After July 23rd, returns of these parts will no longer be accepted. These parts should be returned via ZSR Special Return, using item category SCM Authorized Part Return. Please include a copy of this NCU as your authorization to return these parts. This procedure will not affect your return allowance. All returned parts will be replaced in accordance with the chart provided below.

The deadline for all dealer returns is no later than Thursday, June 4, 2026. After June 4th, returns of these parts will no longer be accepted. These parts should be returned via ZSR Special Return, using item category SCM Authorized Part Return. Please include a copy of this NCU as your authorization to return these parts. This procedure will not affect your return allowance. All returned parts will be replaced in accordance with the chart provided below.

The updated software improves system stability and enhances the robustness of the driver assistance system. MBUSA will conduct an OTA service campaign. Remote software updates are automatically downloaded and installed in the customers vehicle free of charge and do not require a dealer visit.

Cause The seat can be adjusted too far to the rear beyond the correct limit (combination of seat adjustment and seat backrest angle). Remedy Remedy SW A2329038302 for the SEAT control unit to limit the adjustment range of the mechanical seat components.

interference/background noises are audible to the called party during a call. It becomes increasingly difficult to understand as the speed rises. Cause A. Seating of the microphones in the headliner. Side edges are covered by the textile cover (see picture "1") B. Assembly of microphones (B25/20 or B25/21) in the headliner. C. Dirt inside the microphone housing Remedy 1. Press finger on rear of microphone (on adhesive tape) 2. Remove microphone cap from the front 3. Eliminate protruding material residues of the microphone cutout at the headliner, e.g. with a soldering iron. The microphone must be seated in the headliner as shown in picture "2". 4. Push microphone from behind until it is firmly pressed into the headliner 5. Maintain pressure and press/clip cap into microphone from the front. Note: The cover cap must be clearly heard and felt to engage. 6. This procedure must be carried out on both microphones (B25/20 and B25/21) Note: It is recommended to replace the cover caps. The non-woven cloth in the cover cap protects the microphone from soiling and must not be removed. NOTE: The information contained in this document is intended for use by trained, professional technicians with the knowledge to properly and safely perform diagnosis and repairs on Mercedes-Benz vehicles, using Mercedes-Benz approved tools and equipment. It informs service technicians about conditions that could occur in certain vehicles and provides information that could assist in proper vehicle diagnosis, service, or repair. It does not indicate that a defect is present in any vehicle referenced in this document nor does it imply warranty coverage. DO NOT assume that a symptom or condition, or a described cause of a symptom or condition, affects any particular vehicle or groups of vehicles, or that a described repair applies to any particular vehicle or groups of vehicles. There can be multiple causes resulting in the same or similar symptoms or conditions described in this document, and trained professional service technicians must use their diagnostic skills to make evaluations on a case-by-case basis. The information contained in this document does not guarantee warranty coverage nor does it extend the vehicles warranty in any way.

interference/background noises are audible to the called party during a call. It becomes increasingly difficult to understand as the speed rises. Cause A. Seating of the microphones in the headliner. Side edges are covered by the textile cover (see picture "1") B. Assembly of microphones (B25/20 or B25/21) in the headliner. C. Dirt inside the microphone housing Remedy 1. Press finger on rear of microphone (on adhesive tape) 2. Remove microphone cap from the front 3. Eliminate protruding material residues of the microphone cutout at the headliner, e.g. with a soldering iron. The microphone must be seated in the headliner as shown in picture "2". 4. Push microphone from behind until it is firmly pressed into the headliner 5. Maintain pressure and press/clip cap into microphone from the front. Note: The cover cap must be clearly heard and felt to engage. 6. This procedure must be carried out on both microphones (B25/20 and B25/21) Note: It is recommended to replace the cover caps. The non-woven cloth in the cover cap protects the microphone from soiling and must not be removed. NOTE: The information contained in this document is intended for use by trained, professional technicians with the knowledge to properly and safely perform diagnosis and repairs on Mercedes-Benz vehicles, using Mercedes-Benz approved tools and equipment. It informs service technicians about conditions that could occur in certain vehicles and provides information that could assist in proper vehicle diagnosis, service, or repair. It does not indicate that a defect is present in any vehicle referenced in this document nor does it imply warranty coverage. DO NOT assume that a symptom or condition, or a described cause of a symptom or condition, affects any particular vehicle or groups of vehicles, or that a described repair applies to any particular vehicle or groups of vehicles. There can be multiple causes resulting in the same or similar symptoms or conditions described in this document, and trained professional service technicians must use their diagnostic skills to make evaluations on a case-by-case basis. The information contained in this document does not guarantee warranty coverage nor does it extend the vehicles warranty in any way.

EQE, EQS, GLA, GLB, GLC, GLE, GLS, GT, S-Class, and SL (118, 167, 192, 206, 223, 232, 243, 247, 254, 290, 294, 295, 296 and 297 platform) vehicles, the MBUX system software does not correspond with the latest series production configuration. The MBUX system will receive an OTA update that includes general product improvements and robustness enhancements for a better entertainment experience. MBUSA will conduct an OTA service campaign. Remote software updates are automatically downloaded and installed in the customers vehicle free of charge and do not require a dealer visit. No customer letter will be mailed for this OTA software update.

Remedy Replace the lower air control management radiator shutter assembly.

E61.0 Remedy In the IC Control Unit Log, please check the following information: Verify whether DTCs B228229, B228287, and B226656 are present in either A or A+S. Verify that Status SchlsselID = "ID is not valid" and Anlernstatus = "IC is initialized", as shown in the attached image (image_2). Please run the XENTRY guided test for the listed DTCs and provide the results.

with one of the following scenarios: Flashing without a speed limit ("- -"). Flashing when current vehicle speed is under speed limit. Flashing between US speed limit symbol and European speed limit symbol. Cause Under Investigation Remedy Under investigation. One option is to turn off Traffic Sign Assist until the investigation is completed. Once completed this LI will be updated. No TIPS case is necessary. Do not replace parts.

SW updates need to be performed. Follow the guided test for FC U116000 in N73/3*1 EIS CU. Perform the SW checks and updates. Fully charge both 12V and 48V batteries. After, perform a few drive/park cycles with at least 1 overnight park cycle. If the 12V message is no longer present, release the vehicle.

vehicles, the software of the rear control unit does not meet current production specifications. As a result, the soft-top locking mechanism at the locking hook may not allow the soft top to fully close. What Were Doing MBUSA will conduct a service campaign. An authorized Mercedes-Benz dealer will update the rear control unit software.

intermediate position (picture 1) and then cancel the closing process. Cause There could be three causes for this problem: A. Welding status of the stop buffer of a stop screw B. GAK may require additional calibration C. Additional adjustment of the stowage space locking mechanism needed Remedy: See attachment.

intermediate position (picture 1) and then the soft top will not continue closing. Cause There could be three causes for the complaint: A. Incomplete welding of the stop buffer for the stop screw B. Incorrectly calibrated GAK c. Incorrect adjustment of the stowage space locking mechanism Remedy Follow instructions to close soft top.

OR Rattling, humming, dry sliding/gravel noise from the electric steering system when steering (see attachment). Complaint does not impact the ability to safely steer or control the vehicle. Cause Ball screw drive (KGT) of electric steering damaged by: 1. External force due to: Hitting the curb/posts with the front wheels. Driving over obstacles (e.g. pothole/ threshold/ speed bump/ gully) at an inappropriate speed. 2. Corrosion/ water ingress through a damaged boot (see attachment). Cracks (1) High pressure cleaner (2) Animal bite (3) See various examples listed in the attachments for examples of outside influence. Remedy Remove boot clamps closest to steering gear housing on both left and right (as seen in "Steering Rack Boot Clamp Location"). Pull back boot and inspect for rust, broken end stops, water, or any other anomalies. Replace electric steering. Note: Steering gears replaced due to outside influence or damage must not be claimed under warranty!

Commonly used acronyms in LI's and TIPS cases. Control unit names, numbers, and how to identify. Network/wiring architecture groups to baumuster quick reference. Platform to baumuster quick reference. Cause Information only Remedy Acronyms: AV = Actual Values CPR = Car Package Release (For MB.OS) CU = Control Unit CUL = Control Unit Log DTC = Diagnostic Trouble Code E-Stand = Fresh-up head unit boot software (found in head unit control unit log) FUP = Fresh-up FW = Firmware HSVL = High Speed Video Line HU = Head Unit HW = Hardware IPD = Injector Performance Data ISU = Initial Start Up LVDS = Low Voltage Differential Signal NAG"x" = New Automatic Gearbox ("x" is the generation number, example: NAG3) NSFT = Not Safe For Transport MOPF = Model Facelift (Ex: 167 MOPF) PiH = Plug-in Hybrid SA Code = Sonderausstattungscode (Option Code) SCN = Software Calibration Number SW = Software TCU = Telecommunication Control Unit (Hermes/Ramses/Etc...) QT = Quicktest XD = XENTRY Diagnosis Control Unit Identification: Refer to the attachment "Control Unit Nomenclature" for location of each. Control Unit Name Control Unit Number Control Unit Short name Control Unit Diogenes ("dy-oj-uh-neez") name - Control unit variant/family. Network/Wiring Architecture to Baumuster Quick Reference: Star 1 117, 156, 246 (MFA) 166, 176, 221, 242, 246, 292 906 Star 2 205, 213, 238, 253, 257, 290 (MRA) 117, 156, 246 (MFA) 118, 177, 243, 247 (MFA2) 167, 222, 292, 463, 465 907 Star 3 294, 295, 296, 297 (EVA2) 206, 214, 223, 236, 254 (MRA2) 192 and 232 (MSA) Star 3.5 174 178 Platform to Baumuster Quick Reference: MRA = "Mercedes-Benz Rearwheel Architecture": 205 213 222 238 253 257 290 MRA2 = "Mercedes-Benz Rearwheel Architecture - Generation 2": 206 214 223 236 254 MFA = "Mercedes-Benz Frontwheel Architecture" 117 156 246 MFA2 = "Mercedes-Benz Frontwheel Architecture - Generation 2" 118 177 243 247 EVA1.5 = "Electric Vehicle Architecture" 243 EVA2 = "Electric Vehicle Architecture - Generation 2" 294 295 296 297 MSA = "Mercedes-Benz Sport Architecture" 192 232 MMA = "Mercedes-Benz Modular Architecture" 174 178

Commonly used acronyms in LI's and TIPS cases. Control unit names, numbers, and how to identify. Network/wiring architecture groups to baumuster quick reference. Platform to baumuster quick reference. Cause Information only Remedy Acronyms: AV = Actual Values CU = Control Unit CUL = Control Unit Log DTC = Diagnostic Trouble Code E-Stand = Fresh-up head unit boot software (found in head unit control unit log) FUP = Fresh-up FW = Firmware HSVL = High Speed Video Line HU = Head Unit HW = Hardware IPD = Injector Performance Data ISU = Initial Start Up LVDS = Low Voltage Differential Signal NAG"x" = New Automatic Gearbox ("x" is the generation number, example: NAG3) NSFT = Not Safe For Transport MOPF = Model Facelift (Ex: 167 MOPF) PiH = Plug-in Hybrid P3 Hybrid = AMG Plug-in Hybrid with rear drive unit SA Code = Sonderausstattungscode (Option Code) SCN = Software Calibration Number SW = Software TCU = Telecommunication Control Unit (Hermes/Ramses/Etc...) QT = Quicktest XD = XENTRY Diagnosis Control Unit Identification: Refer to the attachment "Control Unit Nomenclature" for location of each. Control Unit Name Control Unit Number Control Unit Short name Control Unit Diogenes ("dy-oj-uh-neez") name - Control unit variant/family. Network/Wiring Architecture to Baumuster Quick Reference: Star 1 117, 156, 246 (MFA) 166, 176, 221, 242, 246, 292 906 Star 2 205, 213, 238, 253, 257, 290 (MRA) 117, 156, 246 (MFA) 118, 177, 243, 247 (MFA2) 167, 222, 292, 463, 465 907 Star 3 294, 295, 296, 297 (EVA2) 206, 214, 223, 236, 254 (MRA2) 192 and 232 (MSA) Star 3.5 174 178 Platform to Baumuster Quick Reference: MRA = "Mercedes-Benz Rearwheel Architecture": 205 213 222 238 253 257 290 MRA2 = "Mercedes-Benz Rearwheel Architecture - Generation 2": 206 214 223 236 254 MFA = "Mercedes-Benz Frontwheel Architecture" 117 156 246 MFA2 = "Mercedes-Benz Frontwheel Architecture - Generation 2" 118 177 243 247 EVA1.5 = "Electric Vehicle Architecture" 243 EVA2 = "Electric Vehicle Architecture - Generation 2" 294 295 296 297 MSA = "Mercedes-Benz Sport Architecture" 192 232 MMA = "Mercedes-Benz Modular Architecture" 174 178

drivetrain control unit does not meet current production specifications. The system may experience an excessively high quiescent current draw on the vehicle, which could lead to an increased discharge of the 12V battery. MBUSA will conduct a service campaign. An authorized Mercedes-Benz dealer will update the drivetrain control unit software.

Commonly used acronyms in LI's and TIPS cases. Control unit names, numbers, and how to identify. Network/wiring architecture groups to baumuster quick reference. Platform to baumuster quick reference. Cause Information only Remedy Acronyms: AV = Actual Values CU = Control Unit CUL = Control Unit Log DTC = Diagnostic Trouble Code E-Stand = Fresh-up head unit boot software (found in head unit control unit log) FUP = Fresh-up FW = Firmware HSVL = High Speed Video Line HU = Head Unit HW = Hardware IPD = Injector Performance Data ISU = Initial Start Up LVDS = Low Voltage Differential Signal NAG"x" = New Automatic Gearbox ("x" is the generation number, example: NAG3) NSFT = Not Safe For Transport MOPF = Model Facelift (Ex: 167 MOPF) PiH = Plug-in Hybrid P3 Hybrid = AMG Plug-in Hybrid with rear drive unit SA Code = Sonderausstattungscode (Option Code) SCN = Software Calibration Number SW = Software TCU = Telecommunication Control Unit (Hermes/Ramses/Etc...) QT = Quicktest XD = XENTRY Diagnosis Control Unit Identification: Refer to the attachment "Control Unit Nomenclature" for location of each. Control Unit Name Control Unit Number Control Unit Short name Control Unit Diogenes ("dy-oj-uh-neez") name - Control unit variant/family. Network/Wiring Architecture to Baumuster Quick Reference: Star 1 117, 156, 246 (MFA) 166, 176, 221, 242, 246, 292 Star 2 205, 213, 238, 253, 257, 290 (MRA) 117, 156, 246 (MFA) 118, 177, 243, 247 (MFA2) 167, 222, 292, 463, 465, 906 Star 3 294, 295, 296, 297 (EVA2) 206, 214, 223, 236, 254 (MRA2) 192 and 232 (MSA) 907 Platform to Baumuster Quick Reference: MRA = "Mercedes-Benz Rearwheel Architecture": 205 213 222 238 253 257 290 MRA2 = "Mercedes-Benz Rearwheel Architecture - Generation 2": 206 214 223 236 254 MFA = "Mercedes-Benz Frontwheel Architecture" 117 156 246 MFA2 = "Mercedes-Benz Frontwheel Architecture - Generation 2" 118 177 243 247 EVA1.5 = "Electric Vehicle Architecture" 243 EVA2 = "Electric Vehicle Architecture - Generation 2" 294 295 296 297 MSA = "Mercedes-Benz Sport Architecture" 192 232 MMA = "Mercedes-Benz Modular Architecture" 174

drivetrain control unit does not meet current production specifications. The system may experience an excessively high quiescent current draw on the vehicle, which could lead to an increased discharge of the 12V battery. MBUSA will conduct a service campaign. An authorized Mercedes-Benz dealer will update the drivetrain control unit software.

The clunk is heard once when changing from forward to reverse (and vice versa). Note: Sound file in attachment Cause If the complaint is eliminated by experimentally loosening the outboard collar nut (by 1 turn), the problem is due to micromovement in the connection between the wheel bearing inner race and the joint housing of the side shaft. Note: The collar nut must always be replaced after being loosened and must be tightened to the specified torque. Remedy Coat contact surface of side shaft with wheel bearing with Molykote paint. To do this, proceed as follows: 1. Remove outboard side shafts (extract outer joint gearing from wheel hub) 2. Clean contact surface A (see image file in attachment "Outer joint housing before") before coating with Molykote, using "spirit" (free of dust and grease) 3. Coat contact surface A (see image file in attachment "Outer joint housing after") using Molykote and leave to dry for one hour in removed condition 4. Reinstall side shafts

The noise is heard once in each instance when changing direction of travel. Note: Sound file in attachment Cause If the complaint is eliminated by experimentally loosening the outboard collar nut (by 1 turn), the problem is due to cracking of the microweld between the wheel bearing inner race and the joint housing of the side shaft. Note: The collar nut must always be replaced after being loosened. See also LI33.20-P-078406 Remedy Coat contact surface of side shaft with wheel bearing with Molykote paint. To do this, proceed as follows: 1. Remove side shafts 2. Clean contact surface A (see image file in attachment "Outer joint housing before") before coating with Molykote, using "spirit" (free of dust and grease) 3. Coat contact surface A (see image file in attachment "Outer joint housing after") with Molykote and leave to dry for "one hour" in removed condition 4. Reinstall side shafts Note: Before using the antifriction coating (Molykote), stir it or shake it thoroughly for (at least 1 minute).

squeaking, chattering, shuddering B: The windshield is not wiped completely (streaking) C: During the downward movement water is pulled back onto the windshield from the A-pillar (Figure 1) D: After windshield cleaning, water keeps spraying onto the windshield for several wipe cycles (Figure 2) A1: The windshield and wiper blades are contaminated with residues from car washing facilities, identifiable by the water beading. The resulting differences in the friction values between the wiper blades and the windshield can excite the wiper blades to vibrate. Note: It is mostly wax residue from the washer system, but also water-repellent nano-particle coating for paint and/or silicone-based washer fluid, that could cause this problem. A partially dry windshield also has different friction values, which can likewise result in squeaking of the wiper blades A2: The wiper blades are worn by mechanical damage (wiper lip damaged by ice or insect debris, or deformed by long periods of disuse). A3: Incorrect angle of incidence of the wiper arms to the windshield. Because of this, the rubber lip of the wiper blade may not flip over at the reversal point. Cause B: B1: Wax/ dirt residues on the windshield B2: Wiper blades deformed or worn B3: Downforce of wiper arm not OK (Figure 3) Cause C: Water is pulled back onto the windshield by the differential pressure created as the wiper arm moves downwards. Cause D: Washer water collects in the fastening of the wiper blade and is blown onto the windshield by the airstream over several wipe cycles. Note and supporting information: Wiper blades are wear parts which, even when "not used" for long periods (kept in park position), may become permanently deformed and damaged. Further stresses on the rubber wiper blade arise due to various environmental influences which progressively change the effectiveness of the rubber wiper blade and accelerate the aging process. Due to the natural aging process and wear, the wiper blades should be replaced twice a year, preferably in Spring and Fall (see operator's manual). Remedy Remedy A: A1: Cleaning entire windshield with A 000 986 40 71. A2: Checking water's flow behavior after windshield has been cleaned (see Video 1). If, after cleaning, there are still areas with water beading, then the cleaning process must be carried out again until a rejection reaction is no longer present. Note: On the vehicle in the video (Video 1), water still beads on the bottom left of the windshield. The windshield is still not properly clean, even though it appears to be clean. The windshield is only properly clean when there are no more areas on the windshield where water beads. A3: Replace wiper blades with genuine wiper blades. Important: Only exchange wiper blades if windshield no longer has water-repellent areas Note: Replacement of wiper blades is not covered under warranty and can be replaced at the expense of the customer. Remedy B: B1: Clean windshield with intensive cleaner A 000 986 40 71. Important: Do not clean the wiper blades otherwise the graphite coating will be damaged. B2: Replace wiper blades with genuine wiper blades Note: Replacement of wiper blades is not covered under warranty and can be replaced at the expense of the customer. B3: Check the wiper arm for excessive resistance in the bearing. Restore mobility or replace wiper arm if necessary. Remedy C: Problem inherent in design for which there is no technical remedy. Exception: X204 up to 02/2014. In these vehicles, it is possible to install the design configuration of vehicles as of 02/2014. This includes wiper arms (styled arms) with improved behavior in this respect. It is also necessary to replace the wiper blades because the styled arms feature a Top Lock connection (previously Side Lock).

N51/1 - "The pressure control system has a malfunction. There is an implausible signal." C128864 in N51/1 - "The level control system has a malfunction. The duration of the actuation was exceeded: overload protection is active." Note: Only applies to vehicles up to production date October 15, 2025 Cause Coding in the suspension control unit N51/1 (EHRC232). Remedy SCN code the suspension control unit N51/1 (EHRC232). Verify no instrument cluster light illuminates when actuating the front axle lifter to the raised and lowered position.

The noise is heard once in each instance when changing direction of travel. Note: Sound file in attachment Cause If the complaint is eliminated by experimentally loosening the outboard collar nut (by 1 turn), the problem is due to cracking of the microweld between the wheel bearing inner race and the joint housing of the side shaft. Note: The collar nut must always be replaced after being loosened. See also LI33.20-P-078406 Remedy Coat contact surface of side shaft with wheel bearing with Molykote paint. To do this, proceed as follows: 1. Remove side shafts 2. Clean contact surface A (see image file in attachment "Outer joint housing before") before coating with Molykote, using "spirit" (free of dust and grease) 3. Coat contact surface A (see image file in attachment "Outer joint housing after") with Molykote and leave to dry for "one hour" in removed condition 4. Reinstall side shafts Note: Before using the antifriction coating (Molykote), stir it or shake it thoroughly for (at least 1 minute).

control unit software does not correspond to current production specifications. The SRS control unit will be updated to improve vehicle charging functionality during future over-the-air updates. MBUSA will conduct a service campaign. An authorized Mercedes-Benz dealer will update the SRS control unit software.

airbag control unit software does not correspond to the latest series production configuration. The airbag control unit will be updated to improve the vehicle charging functionality during future OTA updates. MBUSA will conduct an OTA service campaign. Remote software updates are automatically downloaded and installed in the customers vehicle free of charge and do not require a dealer visit.

software for the airbag control unit does not correspond to the latest series production configuration. The airbag control unit will be updated to improve the vehicle charging functionality during future OTA updates. MBUSA will conduct an OTA service campaign. Remote software updates are automatically downloaded and installed in the customers vehicle free of charge and do not require a dealer visit.

periods of time (pressure marks). Objects wedged between the seat backrest and seat cushion (e.g. seat belt buckle). Light initial creases due to vehicle handling. Light creases in the outer covers originating from the production process (missing finish). Heat treatment of the seat covers using heat gun and plastic wedge. Be very careful to not overheat the seat material!

Cause Many possible root causes Remedy *Note - This Li does not apply if there are other Li's that apply to your concern OR you have a fault and/or guided test that leads to a root cause. AC Diagnosis (General) Initial Steps Verify Customer Concern Confirm the issue reported by the customer. Compare to Like Vehicle Determine if the behavior is normal by comparing with a similar vehicle. Determine Your Game and Players Identify the diagnostic strategy and involved components/systems. Testing Perform relevant diagnostic tests. Refrigerant Quantity Record the amount of refrigerant recovered and compare it to the specified value (if applicable). Forming Gas is the ONLY approved leak test method. (DYE is NOT approved) TIPS Case Submission Requirements/Warranty Claim Submission Requirements (Template attached to be used for submission of Warranty claim and/or TIPS case) Cooling Capacity Test (If System Has a Charge) *Note - TIPS case is only required if the root cause is not identified or other Li's/documents require a case to be open. Before Repairs Gauge Readings High and Low pressure readings (from machine or separate gauges). Leak Detection (if applicable) PPM of any leaks found. XENTRY Printouts Climate control AVs. HV compressor AVs (for heat and AC systems). Thermometer Readings Left and right dash vents. Center vent, footwell, and/or rear vents (if concern is localized). Ambient Conditions Temperature and humidity from OCP AVs (if available). After Repairs Gauge Readings High and Low pressure readings before and after repairs. Thermometer Readings Left and right dash vents before and after. Center vent, footwell, and/or rear vents before and after (if localized concern). Documentation Complaint Analysis, Game/Players, and Testing Steps. Include expected results and technical justification for the diagnosis. Avoid listing R/I stepsfocus on diagnostic reasoning and root cause. All prior measurements need to be documented on the repair order. OP code usage: 831232 - Max .5 for Cooling Capacity Test 831040 - Only to be utilized if you have a fault code and are actively diagnosing that fault code (MAX 1 hour) 831762 - This includes basic leak check 831285 - This can only be used in extenuating circumstances where a leak cannot be found (MAX 1 hour)

Cause Many possible root causes Remedy AC Diagnosis (General) Initial Steps Verify Customer Concern Confirm the issue reported by the customer. Compare to Like Vehicle Determine if the behavior is normal by comparing with a similar vehicle. Determine Your Game and Players Identify the diagnostic strategy and involved components/systems. Testing Perform relevant diagnostic tests. Refrigerant Quantity Record the amount of refrigerant recovered and compare it to the specified value (if applicable). Forming Gas is the ONLY approved leak test method. (DYE is NOT approved) TIPS Case Submission Requirements/Warranty Claim Submission Requirements Cooling Capacity Test (If System Has a Charge) *Note - TIPS case is only required if the root cause is not identified or other Li's/documents require a case to be open. Before Repairs Gauge Readings High and Low pressure readings (from machine or separate gauges). Leak Detection (if applicable) PPM of any leaks found. XENTRY Printouts Climate control AVs. HV compressor AVs (for heat and AC systems). Thermometer Readings Left and right dash vents. Center vent, footwell, and/or rear vents (if concern is localized). Ambient Conditions Temperature and humidity from OCP AVs (if available). After Repairs Gauge Readings High and Low pressure readings before and after repairs. Thermometer Readings Left and right dash vents before and after. Center vent, footwell, and/or rear vents before and after (if localized concern). Documentation Complaint Analysis, Game/Players, and Testing Steps. Include expected results and technical justification for the diagnosis. Avoid listing R/I stepsfocus on diagnostic reasoning and root cause. All prior measurements need to be documented on the repair order. OP code usage: 831232 - Max .5 for Cooling Capacity Test 831040 - Only to be utilized if you have a fault code and are actively diagnosing that fault code (MAX 1 hour) 831762 - This includes basic leak check 831285 - This can only be used in extenuating circumstances where a leak cannot be found (MAX 1 hour)

Cause Many possible root causes Remedy AC Diagnosis (General) Initial Steps Verify Customer Concern Confirm the issue reported by the customer. Compare to Like Vehicle Determine if the behavior is normal by comparing with a similar vehicle. Determine Your Game and Players Identify the diagnostic strategy and involved components/systems. Testing Perform relevant diagnostic tests. Refrigerant Quantity Record the amount of refrigerant recovered and compare it to the specified value (if applicable). Forming Gas is the ONLY approved leak test method. (DYE is NOT approved) TIPS Case Submission Requirements Cooling Capacity Test (If System Has a Charge) Before Repairs Gauge Readings High and Low pressure readings (from machine or separate gauges). Leak Detection (if applicable) PPM of any leaks found. XENTRY Printouts Climate control AVs. HV compressor AVs (for heat and AC systems). Thermometer Readings Left and right dash vents. Center vent, footwell, and/or rear vents (if concern is localized). Ambient Conditions Temperature and humidity from OCP AVs (if available). After Repairs - Warranty Submission Requirements on the Repair Order Gauge Readings High and Low pressure readings before and after repairs. Thermometer Readings Left and right dash vents before and after. Center vent, footwell, and/or rear vents before and after (if localized concern). Documentation Complaint Analysis, Game/Players, and Testing Steps. Include expected results and technical justification for the diagnosis. Avoid listing R/I stepsfocus on diagnostic reasoning and root cause. All prior measurements need to be documented on the repair order. OP code usage: 831232 - Max .5 for Cooling Capacity Test 831040 - Only to be utilized if you have a fault code and are actively diagnosing that fault code 831762 - This includes basic leak check 831285 - This can only be used in extenuating circumstances where a leak cannot be found

to: Summer heat Direct sunlight Lack of air conditioning or ventilation Camera enters self-protection mode to prevent overheating. Remedy Do NOT replace any parts. The driver camera (NTG7: MDC295; CIVIC.i2: CIVIC206) is operating as designed. Allow the interior to cool down. If the message remains after cooling: Run XENTRY Diagnosis Check latest software for Actuation of Driver Camera (A26/17) No TIPS case required.

fuel system control unit (FSCU) software may not correspond to the current series production configuration. As a result, on-board diagnostic requirements may not be met. Remedy MBUSA will conduct a service campaign. An authorized Mercedes-Benz dealer will update the FSCU software on the affected vehicles.

2. Update Fuel System Control Unit (FSCU10) software. To do this, select menu item "Quick test view . N118/3 Control unit Fuel pump (FSCU10) . Adaptations . Control unit update . Updating of control unit software". Then follow the user guidance in XENTRY Diagnosis. 3. Disconnect XENTRY Diagnosis.

Cause Chip protection films are a wear item that may need to be replaced over the life of the vehicle. They are typically not covered by vehicle warranty. Remedy To properly install a paint/chip protection film, please follow the below guidelines: #1 - Utilize a solution that is 0.2% soap solution (1,000ml of water + 2ml of liquid soap). #2 - Clean the paint surface and ensure it is dust-free. #2a - When cleaning, you can utilize isopropyl alcohol (Rubbing Alcohol) to assist with cleaning. #2b - We recommend a lint-free rag for secondary dusting. #3 - Wet hands with the soapy water solution to protect the adhesive surface. #4 - Remove the backing paper from the film completely. #5 - Moisten the vehicle surface with the soapy water. You can also lay the protective film with adhesive side out onto the wetted surface to also cover the adhesive layer in the soapy water solution. #6 - Remove film and flip over to gently place adhesive side against the paint surface. #7 - Working from the center out, use a squeegee to press the soapy water solution out from under the film. Use sufficient pressure to firmly press the film into the paint surface, but not an excessive amount to damage or stretch the film. #8 - Allow film and paint to "cure" until all of the moisture has evaporated. At this time the adhesive should be dried and cured enough for sufficient hold to release the vehicle.

connection at collecting pan Remedy Remove glove compartment housing (ar68.10-p-1400sly) and check threaded connection (see picture 1). If screw N000000008345 is missing or the threaded connection is loose, retrofit/rework accordingly.

May also report rough running. Cause Under investigation Remedy Follow the instructions "232 Diagnosis and Repair_CEL for P152C00" in the attachments. If after the "short road test" (step 5 on page 4) the CEL remains off, release the vehicle. If the CEL returns, open a PTSS case and include all the attachments requested in the instructions. If the vehicle has returned after previously having this LI applied to it, do not perform the LI a second time and instead immediately open a PTSS case with a IQT and ME CUL.

Remedy There will be optimized software for iPhone 14 iOS (target date 05/2023). This LI will be updated when the software becomes available. A software update with currently available iOS software will not be effective for the iPhone 14.