2026 Mercedes-Benz AMG GT43 TSBs

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.

vehicle production to hold the side window pane in the correct position relative to the body- in-white. Remedy The rivet can be removed as follows: 1. Loosen upper molded part of seal from B-pillar bar and body-in-white flange CAREFUL: Do not pull off too far (attachment 1). 2. Secure rivet set on back with butyl ball so that it does not become lost during next operation steps. Protect glass using doubled-up adhesive tape (attachment 2). 3. Bore rivet head from outside (drill bit diameter 8mm) and suction off shavings at the same time CAREFUL: Avoid shavings falling between B-pillar bar and seal (attachment 3). Drive remaining rivet inward with a punch (d=3mm) (attachment 4) and remove. The butyl ball from Step 2 prevents it from falling down. 4. Seal opening formed by bored rivet head with a butyl ball d=4mm from inside to outside (attachment 5). Seal sanding spot at B-pillar bar against corrosion with black touch-up paint pen. 5. Fix seal in place at B-pillar bar again.

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.

This is observed during part replacement when the bumper is received without holders included. Applicable Bumper Part Numbers (SA 773): A1928854401 A1928855601 Cause There is no underlying defect See Remedy Remedy When replacing the rear lower carbon bumper cover, the PTS sensor holders must be ordered separately. Required Additional Parts: A1928883700 PTS holder, left A1928883800 PTS holder, right If the item numbers cannot be ordered regularly via Paragon, please open a TIPS case to the Body/Chassis/Entertainment inbox and provide the following information: recipient address contact person The parts will then be made available accordingly. Installation Notes PTS holders are supplied with adhesive tape and positional markings. Ensure the bonding surface of the bumper trim is clean and dry. Position the PTS holder correctly and apply firm, even pressure to ensure proper adhesion and secure bonding.

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.

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.

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.

menu, e.g., 505 or 550A, which includes a service A. Cause The root cause is currently being investigated. Remedy To determine the cause, the instrument cluster control unit (N133/1) and powertrain control unit (N127) logs are required before confirming the service or correction using XENTRY Diagnosis. Please open a TIPS case to BCE inbox with the requested information in the attachments.

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 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 Q2 2026.

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.

Please also see LI54.65-P-080132 for additional listed red ring causes. Cause EMF interference. Remedy Camera functionality is not affected. Cameras and displays operate normally. For vehicles with a front facing actuating camera and flap (223 and 297): 223, 297 > Install clip on ferrite magnet on M35/1, pin 3. For vehicles with rear facing camera (223, 213 Facelift, 238, 257, 290, 297): 297 > Install 2 x ferrite magnets on M35/2, pin 3 and 4. 213 Facelift, 223, 238, 257, 290 > Install on M35/2, pin 4

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.

shown in red on vehicles with low mileage. Cause Directional control valve may stick. Remedy 1 Read off oil level in instrument cluster and correct if necessary. 2 Perform approx. 1015 engine starts, then clear fault codes. 3 Perform road test with vehicle. If fault code reoccurs during road test: Install new directional control valve.

Fault codes U019F00 or U019F87 current/stored in MRG1 control unit. Cause Various causes Remedy Perform guided test for fault code U019F with XENTRY diagnosis. Verify the following connections are clean and tight. Correct any problems and retest pump actuation: 12V plug at M75/11 48V plug at M75/11 48V connector X192/4 Connections at 48V fuse box F153/2 Sockets 1,2, and 5 at connector 2 of MRG1 control unit M75/11 circuit 41 ground If actuation and above connections are OK, but resistance between M75/11 and engine block is less than 2 ohms or heat shield touching coolant pump, proceed with below steps. 1Modify engine insulation per attached instructions. 2Remove engine control module and measure continuity within control unit between connector 2 pin 1 and connector 6 pin 2. 2aIf open circuit is found, replace engine control unit (MRG1) and perform initial startup. Refer to XENTRY parts information group 54/054 item 300. 3Clear faults and verify M75/11 operating normally.

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

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.

Please follow the relevant guided tests for the 223 and 206. For 223 with fault code B1FCB97 follow LI54.10-P-076026. Various causes are possible. The faults listed in the various causes do not all have to be present at all times. Some of these complaints may overlap. Rely on the faults listed in the Cause section for identifying the correct Remedy. 1. No start 2. Yellow or red instrument cluster message for 48 V on-board electrical system battery (G1/3) 3. Limp home mode, overheating, A/C not blowing cold, or loss of acceleration 4. Check Engine Light Cause Cause 1: Software causes Intermittent No Starts with fault B183387 in DC/DC converter N83/1 Cause 2: Software causes Permanent No Start with fault B183349. May also have fault B183371. Cause 3: Hardware short circuit in 48V system causes fault B183319 in 48V battery. May also have fault B183371. Cause 4: Internal 48V battery Peltier cooling element failure causes fault B183397 Cause 5: This will Always have fault code B183371 but different from cause 2 and 3 -- it will Not have B183349, B183319, or any other faults in the 48V battery. This will only have fault B183371 in 48V battery. Cause 5 is from the 48V battery detecting an abnormality which then causes the 48V battery to disconnect itself. The disconnected 48V battery then causes subsequent symptoms: Limp Home Mode, overheating, A/C not blowing cold, or loss of acceleration Cause 6: Check Engine Light with fault P0606F1 in the N127 PTCU Cause 7: Check Engine Light with possible no start and fault P057FF1 Remedy Note: each of these remedies correspond to a specific cause. Make sure to match correct Cause with Remedy. Remedy 1: 1. Check the 12V power supply and LIN connection 2. Update software in G1/3 (48V battery) using newest XENTRY software and Add-ons 3. Road test and release vehicle if no further symptoms Remedy 2: 1. Charge the 12V battery (Charging current <5A) 2. Update software in G1/3 (48V battery) using newest XENTRY software and Add-ons 3. Road test and release vehicle if no further symptoms If the faults return or cannot be cleared: 1. XENTRY MUST be connected with VCI cable to correctly complete this remedy. 2. Complete guided test for B183349. 3. If guided test completes, vehicle starts, and drive cycles show no further symptoms, release vehicle. 4. If after guided test completes, XENTRY states to replace 48V battery: replace only 48V battery. If vehicle is a MY21 w/M256 engine, update SW in 48V battery 5. If this is a repeat visit for fault B183349 and guided test has already been completed, open a TIPS case. 6. If guided test does not complete OR symptoms are still present open a TIPS case. 7. If communication cannot be established with 48V battery perform physical layer check at 12V wiring to DCDC. If no abnormalities found, replace the 48V battery. 8. If guided test completes but a new fault code is present (such as B183319, B183371, etc.) follow the relevant Cause/Remedy for that fault in this LI. Remedy for 3: (If this occurred after Campaign 2025050001, this Li does not apply and LI54.10-P-079772 should be followed) 1. If fault is not Current (only Stored): 1. Update software in G1/3 (48V battery) using newest XENTRY software and Add-ons 2. Road test and release vehicle if no further symptoms If the faults return or this is a second visit after the SW update: 1. Complete the guided test for B183319 2. Perform XENTRY actuations for all 48V components. 3. Create a TIPS case with ALL Preliminary measures required as noted below for Remedy 5 4. Upload to TIPS case ISA performance data from the N129. 5. ISA performance data location in XD: 6. N129 control unit under Special Procedures 7. "Procedures for support queries to market support" 8. "Collation of diagnosis performance data" 9. "engine at idle" See attachment for further instructions.

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

the vehicle is stationary and ECO Start/Stop is active (combustion engine is off). The noise is more noticeable outside the vehicle and in acoustically shielded areas such as closed rooms or garages. Cause The noise in the valve body (EHS) is caused by superimposed pressure peaks acting on the valves. This phenomenon occurs only after a certain running-in period due to the influence of micro-contamination in the valve bores. Remedy A hardware modification of the electro-hydraulic control unit (EHS) is currently being implemented (no change to the part number). This will be incorporated into series production and as a spare part starting from 12/2025. This is only a comfort-related complaint and has no impact on the functionality or service life of the transmission. For sensitive customers, the following measures can be performed: 1. Replace the electro-hydraulic control unit (EHS), the oil pan, and the transmission fluid. - Ensure all oil guide pipes are installed in the new valve body to prevent a new concern after replacement. (See attached location guide)

Cause Signal timing error. Remedy 167, 465: SW has been released. Update the FSAM to the latest SW version. 290, 118, 243, 247: Software is still in development. This fault code does not cause a drivability concern and will clear itself within 2 3 key cycles. The vehicle can be released back to the customer.

Cause Signal timing error. Remedy 167, 465: SW has been released. Update the FSAM to the latest SW version. 290, 118, 243, 247: Software is still in development. This fault code does not cause a drivability concern and will clear itself within 2-3 key cycles. The vehicle can be released back to the customer.

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.

Cause Signal timing error. Remedy 167: SW has been released. Update the FSAM to the latest SW version. 465, 290, 118, 243, 247: Software is still in development. This fault code does not cause a drivability concern and will clear itself within 2-3 key cycles. The vehicle can be released back to the customer.

existing stock must be returned to your facing PDC. The deadline for all dealer returns is no later than Thursday, July 9, 2026. After July 9th, 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.

Cause Signal timing error. Remedy 167: SW has been released. Update the FSAM to the latest SW version. 465, 290: Software is still in development. This fault code does not cause a drivability concern and will clear itself within 2-3 key cycles. The vehicle can be released back to the customer.

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.

Cause Signal timing error. Remedy This fault code does not cause a drivability concern and will clear itself within 2-3 key cycles. The vehicle can be released back to the customer. There is software in development for this concern.

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.

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 (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 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.

Cause Potentially relevance to hardware and/or software Remedy Scenario 1: 1. If the AC does not blow cold air, replace compressor (if compressor's index and part number Figure 1 match against Table 1). a. If the compressor does not fall within Table 1, please open a TIPS case. b. Flush procedure must be followed as per WIS. Scenario 2: 1. If AC does blow cold. a. Follow the following procedure: i. Have the air conditioning system recharged. ii. Clear the fault codes afterward. iii. Let the vehicle stand for 8 hours (OBD reset condition). iv. Check whether the fault is still present. b. Open TIPS case with your findings and answers the following questions, send to the HV/LV inbox. i. When exactly did the MIL appeared (immediately at startup or while driving). ii. What was the ambient temperature, any special driving maneuvers, and whether the vehicle had just come out of a climatecontrolled garage.

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

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.

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.

Does not apply to VIN W1KRJ4xxxxxx11347! Please send an email to your AOM with the subject "Code 26P8891012" and include the following information! Vehicle identification number (VIN) Address of ordering dealer to which the component part is to be sent Work procedure B 1. Replace the dummy bumpers fitted to the vehicle. Please send an email to your AOM with the subject "Code 26P8891012" to have parts ordered! Vehicle identification number (VIN) Which component part is affected? (front bumper, rear bumper) Provide documentation of the dummy component parts, including a representative photo of each part Address of ordering dealer to which the component part is to be sent The new replacement parts (body parts) will undergo an internal check before being sent free of charge to the specified address. Scrap the dummy component parts! Parts Parts will be ordered by contacting your AOM with

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.