2025 Volvo Vnl (4) TSBs
163 Technical Service Bulletins across 16 categories
Categories
Other
34 bulletinsCBR - Observing debris within the cooling system is possible, with this debris potentially being dark and resembling...
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sand.
SC - MCO/VECI Label Reprint.
FI - Elemental Chassis Fairing Replacement.
CBR - U114688 VMCU Communication Fault - VN (4).
CBR - Trailer Tandem Adjustment Procedure - VN (4).
CBR - Air Production Modulator (APM) DTC C10129B - High/Excessive Flow - VN (4).
SC - Cab Leveling Bar Loose
CBR - Automatic High Beam - VN (4).
CBR - Air Production Modulator (APM) DTCC10129B - High/Excessive Flow - VN (4).
CBR - Frame or Cab Lean
CBR - Resolution Process for Locked Control Unit(s).
Some vehicles may have reverse cameras not properly assigned from the factory.
CBR - A significant GPS reporting issue is affecting fleet operations, with trucks maintaining back-office communication...
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but failing to transmit GPS location data.
CBR - This CBR solution outlines the diagnosis and resolution of a DL6 CAN bus resistance issue, where a 40-ohmreading...
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causes ELD communication failure, corrected by disconnecting the SCIM A262.D connector.
CBR - The trucks trailer detection system uses a brief pulse of compressed air through the red trailer supply line to...
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detect a connected trailer, but this pulse can inadvertently re-lock air-actuated tandem slide systems; this procedure outlines a method to mitigate the issue while sliding the trailer tandems.
This document provides guidance for addressing the APM DTC C10129B fault, "High/Excessive Flow"
Volvo Chassis - Frame Or Cab Lean
SC - Volvo Trucks has determined that the XC201 firewall connector lock may not fully latch due to an interference with...
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a tab on the cab hook interface bracket.
SC - Volvo Truck has identified that certain VN4 model trucks have a miscalculation in the inter-axle driveshaft length.
CBR - Key Fob activation issue.
CBR - Error 236 When Programming TGW
CBR - Troubleshooting Mismatches.
CBR - Volvo Chassis - All-New VNL, VN (4) - Air ProductionModulator (APM) DTC C10129B - High/Excessive Flow
CBR - Frame Or Cab Lean
Volvo Trucks has identified that 59 VN (4) day cab model trucks were manufactured without the back-up camera kit that...
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includes the back-up monitoring scope expansion.
These repair instructions are intended to address the following fault: P10CE-97 (Reductant Return: No Flow Detected).
These repair instructions are intended to address the following fault: P2463-00 (Particulate Filter Restriction - Soot...
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Accumulation Bank 1).
These repair instructions are intended to address the following faults: P0544-15, P2031-15, P242A-15 and P246E-15.
Volvo Chassis - VN(4) Automatic Water Drain Message
CBR - Volvo Chassis - All-New VNL, VN (4) - Air Production Modulator (APM) DTC C10129B - High/Excessive Flow
CBR - Volvo Chassis - Vehicle Communications with the New VN (4)
CBR - Volvo Chassis - Cab & Chassis Ground Stud Locations - VN (4) Chassis
CBR - Volvo Chassis - Day Cab Antenna Misaligned - VN (4)
CBR: All-New VNL - Day Cab Antenna Misaligned
Electrical
30 bulletinsSC - Volvo Trucks has determined that a select group of trucks were built with an AHI Module fuel pressure sensor which...
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does not meet our specifications.
CBR - This procedure provides a temporary corrective action for the Lost Communication to Alternator message and Vehicle...
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Master Control Unit (VMCU) DTC C103508 caused by a software issue.
CBR - Volvo Chassis - Battery Sensor Diagnostic and Calibration Procedure - VN (4).
CBR - Volvo Chassis - Steering Wheel Switch Harness Routing And Clipping - VN (4).
CBR - Center Chassis Input Output Module(CCIOM) Fault Code U3000-94 - VN (4).
CBR - Lost Communication to Alternator Message - DTC C103508.
CBR - Lost Communication to Alternator Message.
CBR - Exhaust Temperature Sensor Rationality Faults and MIL Illumination.
Electronic control units on the VN(4), PR (4) and AN (4) contain information that is critical for vehicle functionality,...
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maintaining vehicle life data, and maintaining vehicle compliance. Because of this, swapping ECUs from truck to truck even for diagnostic purposes may cause functional or compliance complications that may or may not be apparent.
To address customer concerns regarding the unprotected ON/OFF button of the Xantrex power inverter located in the luggage compartment.
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The button should be safeguarded to prevent accidental activation, which can result in unintended battery drain.
CBR - The Purpose of this CBR is to assist with diagnostics for fault code U300049 on the Battery Power Management Unit...
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(BPMU).
CBR - When an OTA (Over-The-Air) job starts to program the VECU blocks the starter relay out, if the job ends in a...
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Critical failure, the vehicle will remain in Safe State.
CBR - The Purpose of this CBR is to assist with diagnostics for fault code U300049 on the Battery Power Management Unit...
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(BPMU).
CBR - This CBR solution provides guidelines for ensuring the correct position of battery sensor modules and battery...
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sensor harnesses on the Volvo VN(4) chassis, as well as the Battery Sensor Diagnostic and Calibration Procedure.
CBR - This CBR solution outlines the procedures for diagnosing, replacing, calibrating, and programming Flexible Switch...
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Panels and the Security and Cab Interface Module (SCIM) to resolve switch malfunction notifications and associated fault codes.
CBR - This CBR solution outlines the analysis of temperature changes in sensors T1, T2, and T3 and provides a procedure...
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for inspecting and addressing potential sensor issues related to AHI fuel injection.
CBR - This CBR solution provides guidelines for ensuring the correct position of battery sensor modules and battery...
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sensor harnesses on the Volvo VN(4) chassis, as well as the Battery Sensor Diagnostic and Calibration Procedure.
The purpose of this CBR is to help diagnosis an electrically faulty door latch.
This CBR solution provides guidelines for ensuring the correct position of battery sensor modules and battery sensor...
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harnesses on the Volvo VN(4) chassis, as well as the Battery Sensor Diagnostic and Calibration Procedure.
This CBR solution provides guidance for addressing the U3000-05 fault code in theWireless Sensor GateWay (WSGW)...
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following the S4312 Service Campaign.
SC - Volvo Trucks North America has determined that certain VN(4) model trucks may have been built without the...
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dash-mounted Battery Saver Switch, despite being ordered with this feature.
SC - Volvo Trucks has determined that certain VN model trucks have a mislabeled Electronic Fuse & Relay Center (EFRC)...
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Cover.
CBR - This CBR solution provides guidelines for ensuring the correct position of battery sensor modules and battery...
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sensor harnesses on the Volvo VN(4) chassis, as well as the Battery Sensor Diagnostic and Calibration Procedure.
CBR - Volvo Chassis - Bulkhead Electrical Passthrough Alignment Bracket Interference.
SC - Volvo Trucks has determined that a select group of trucks were built with an AHI Module fuel pressure sensor which...
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does not meet our specifications.
SC - Certain Volvo VN (4) model trucks may experience accelerated battery drain due to continuous power consumption by...
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the Vehicle Master Control Unit (VMCU) and other modules.
CBR - Volvo Chassis - Battery SensorTransition and Troubleshooting Guide - ModelVN(4)
Certain Volvo VN (4) model trucks may experience accelerated battery drain due to continuous power consumption by the...
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Vehicle Master Control Unit (VMCU) and other modules. Depleted batteries can lead to starting issues and trigger erroneous warning lamps and fault codes across various truck modules.
These repair instructions are intended to address the following fault: P204A-13 (Reductant Pressure Sensor - Circuit...
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Open).
This CBR solution outlines the procedures for diagnosing, replacing, calibrating, and programming Flexible Switch Panels...
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and the Security and Cab Interface Module (SCIM) to resolve switch malfunction notifications and associated fault codes.
Engine
30 bulletinsCBR - 3 Liter Engines ONLY - Engine Coolant Pump Housing Leak; Coolant Found Around The Oil Cooler Duct Cover Or In...
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Between The Coolant Pump Housing And Oil Cooler Housing
CBR - Exhaust Leak or Noise Turbo Compound (TC) Bolt Inspection and Repair - VN (4).
CBR - Air-Valve Cover Popping Off Seat
This CBR pertains to two issues that may arise with the Proactive Engine Restart (Remote Engine Start System).
CBR - Certain VN (4) vehicles may be equipped with an Engine Fan Override switch in the dashboard that is not operational.
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.
CBR - The purpose of this CBR is to address reports of water pooling on top of engine tunnel and/or the floor board of...
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the cab.
SC - Volvo Trucks has determined that certain VN and VN 4 model trucks equipped with a D13 Turbo Compound (TC) engine...
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may experience TC Double Idler Gear failure due to incorrect bearing preload.
CBR - This CBR pertains to two issues that may arise with the Proactive Engine Restart (Remote Engine Start System).
CBR - This CBR solution addresses crank no start and engine dying issues in some VN (4) and PR (4) models caused by an...
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incorrect fuel line configuration and/or fuel line fitting not seated correctly.
CBR - Mechanical components with moving parts designed for high-temperature environments such as the turbo wastegate...
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used on the 13L TC engines are susceptible to certain kinds of leakages due to their design requirements.
CBR - This CBR solution addresses crank no start and engine dying issues in some VN (4)models caused by an incorrect...
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fuel line configuration and/or fuel line fitting not seated correctly.
CBR - Determining source(s) of suspect abnormal turbocharger noise.
CBR - This CBR solution addresses crank no start and engine dying issues in some VN (4)models caused by an incorrect...
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fuel line configuration and/or fuel line fitting not seated correctly.
CBR - This CBR solution addresses crank no start and engine dying issues in some VN(4) models caused by an incorrect...
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fuel line configuration.
SC - Volvo Trucks has determined that certain VN 4 model trucks equipped with a D13 Turbo Compound (TC) engine may...
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experience TC unit failure due to an under-torqued idler gear bracket.
SC - Volvo Trucks has identified that certain VN 4 model trucks equipped with a D13 Turbo Compound (TC) engine may be...
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at risk of TC unit failure due to an under-torqued idler gear bracket.
SC - Volvo Trucks has determined that certain VN model trucks equipped with a D13 Turbo Compound (TC) engine may...
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experience TC unit failure due to an under-torqued idler gear bracket.
SC - Volvo Trucks has identified that certain VN model trucks equipped with a D13 Turbo Compound (TC) engine may be at...
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risk of TC unit failure due to an under-torqued idler gear bracket.
Volvo Trucks has identified that certain VN model trucks may encounter an issue with the EECU during a shutdown event.
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If this occurs, the EECU could become corrupted, leading to multiple fault codes, engine derate, and, in some cases, preventing the truck from starting.
Volvo Trucks has determined that certain VN(4) model trucks were built without a necessary Idle Reduction System Weight...
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Exemption Label.
These repair instructions are intended to address the following faults: P2560-00 (Engine Coolant Level Low), Coolant...
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Temp (Engine Coolant Temp is above 210 degrees Fahrenheit) and Oil Temp (Engine Oil Temp is above 240 degrees Fahrenheit).
These repair instructions are intended to address the following fault: P0524-00 (Engine Oil Pressure Too Low).
These repair instructions are intended to address the following fault: P0217-00 (Engine Coolant Over Temperature).
These repair instructions are intended to address the following fault: P2047-13 (Reductant Injection Valve Control Bank...
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1Unit 1 - Circuit Open).
These repair instructions are intended to address the following fault: P0298-00 (Engine Oil Over Temperature).
This CBR solution addresses crank no start and engine dying issues in some VN(4) models caused by an incorrect fuel line...
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configuration.
Vehicles may present with oil leak coming from the clutch/flywheel housing and observation of burned clutch smell or clutch slipping.
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These symptoms can be mistaken as a crankshaft rear main seal leak, when the actual cause is the crankshaft adaptor O-ring.
Volvo Chassis - VN (4) - Coolant Leaks At De-Aeration Lines
CBR- 13L Engine - Rear Main Oil Seal Leak - Model Year 2025
CBR - Volvo Chassis - 13L TC Engine Turbocharger Wastegate Shaft To Housing Leak - VN (4) Chassis
Lighting
9 bulletinsFI - Volvo Trucks has identified faulty load lock clamps.
Fleet Improvement - Volvo Trucks has identified faulty load lock clamps.
CBR - Load Lock Clamp Breaking - VN (4).
Purpose of this CBR is to address Pop up message for PTO Malfunction when there is no PTO Installed.
CBR - Purpose of this CBR is to address Pop up message for PTO Malfunction when there is not PTO Installed.
The purpose of this CBR is to provide instructions when trying to retrieve DTC and a Communication Failed Popup occurs.
CBR - Volvo Chassis - Bunk Lamp Switch Foam Block Replacement
CBR - Troubleshooting cab lean should only begin after completing a vehicle preparation procedure to ensure all...
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components are in place and settled.
CBR - Volvo Chassis - Debris In 13L Cooling Systems Filled With Extended Life (VCS2)
Infotainment
9 bulletinsCBR - CMS Black Screen Troubleshooting - VN(4).
CBR - CMS Black Screen Troubleshooting.
CBR - The purpose of this CBR is to address issues where Contact Workshop : Trailer Light Malfunction" message displayed...
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in instrument cluster.
CBR - For newly delivered vehicles it may be found that the key fob will not unlock the door.
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The message "Pre-delivery Mode" maybe displayed on the instrument cluster.
This CBR solution provides guidance on updating the infotainment system when customer is missing applications and/or...
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having issues with navigation or Apple/Android CarPlay.
CBR - Infotainment system update.
CBR - Infotainment Update For Missing Applications
CBR - Volvo Chassis - Headlight De-icer Function and Driver Display Message -Model VN(4).
CBR - Volvo Chassis - Secondary Display Blank, Will Not Turn On - VN (4) Chassis
Pre-Delivery & Maintenance
8 bulletinsCBR - Service Required Message - VN (4).
CBR - The presence of locked electronic control units may prevent programming and diagnosis.
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This CBR solution provides a structured workflow to resolve such conditions, reduce downtime, and minimize unnecessary eService cases.
CBR - This CBR solution was created toprovide guidance on resolving the Service Required message that may appear in the...
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Instrument Cluster (IC) of VN (4) and PR (4) model vehicles under specific conditions.
This CBR solution was created to provide guidance on resolving the Service Required message that may appear in the...
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Instrument Cluster (IC) of VN (4) model vehicles under specific conditions.
Fleet Campaign - Volvo Trucks has identified certain VN(4) models were built with the incorrect trailer cable/power lift...
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gate brackets.
During the Pre-Delivery Inspection (PDI), it may be necessary to access U-bolt hardware that is obstructed by the Reaction Rod hardware.
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This procedure provides instructions for gaining access to U-bolt hardware, as well as proper reinstallation of Reaction Rod hardware to prevent further interference.
CBR - Volvo Chassis - Pre-Delivery Mode Deactivation - VN (4) Chassis
CBR - Accelerator Pedal: Inspection/Instructions
Body & Paint
7 bulletinsCBR - Daycab Cab Roof Antenna Misalignment Causing Water Intrusion.
This procedure describes the standardized method for repairing failed inserts pulled out of a table surface.
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It applies only when the receiving hole is not significantly damaged. Acceptable conditions include surface fraying or peeling at the painted layer only, withno full-depth cracking.
CBR - Purpose of this CBR is to address the issue with hoods cracking at the headlight.
SC - Volvo Trucks has identified that certain VN(4) model trucks were assembled with the incorrect fastener in the door...
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stop assembly.
SC - Volvo Trucks North America has developed an updated Hood Ventilation Grille that utilizes a mesh insert for VN(4)...
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model vehicles.
Volvo Trucks has identified that certain VN (4) Day Cab model trucks may exhibit improper alignment of the driver-side (left-hand) antenna.
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This misalignment could lead to water intrusion if a gap is present between the roof panel and the antenna seal.
Certain Volvo VN (4) model trucks built with three flexible switch panels did not receive the correct parameters for the switch panel assignments.
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Some switches for features such as height control, axle load distribution, and auxiliary functions may not work as intended.
Tires & Wheels
6 bulletinsCBR - The purpose of this CBR is outline the interim software solution for VN4.
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Note that this document is subject to updates and currently covers Service Pack updates to B1_T2_5.1.
CBR - Interim Immobilizer Parameter Configuration.
CBR - The purpose of this CBR is outline the interim software solution for VN4.
CBR - The purpose of this CBR is outline the interim software solution for VN4.
The purpose of this CBR is outline the interim software solution for VN4.
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Note that this document is subject to updates and currently covers Service Pack updates to B1_T2_4.2.
CBR - The purpose of this CBR is outline the interim software solution for VN4.
Suspension
5 bulletinsCBR - Shock Interference With Z Springs.
CBR - Electronically Controlled Suspension (ECS) calibration using Premium Tech Tool (PTT) is required to correct...
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discrepancies between the cluster load indicator and actual scale values, ensuring proper functionality of liftable axles and preventing unintended axle behavior.
CBR - This document provides guidance for replacing compressed well nuts with spring nuts and screws to improve grille...
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retention on affected units.
CBR - Volvo Chassis - VN (4) - Electronically Controlled Suspension (ECS) Calibration for Liftable Axles
Frame lean can be caused by several seemingly isolated possibilities.
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The two most common are suspension and frame assembly issues.
Hybrid & EV
5 bulletinsCBR - Frequent Parked Regeneration Requests - VN (4).
CBR - Regeneration Not Possible
CBR - Xantrex Inverter Sub-hardware Mismatch.
CBR - Inverter Low/No Power Shutoff Bypass.
CBR - Power Inverter Operation and Verification
Software & Calibration
5 bulletinsThis document provides guidance for addressing the APM DTC C10129B fault," High/Excessive Flow" This fault was...
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introduced by a previous APM software package and requires specific containment actions.
CBR - This document provides guidance for addressing the Air ProductionModulator (APM) DTC C10129B fault,...
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"High/Excessive Flow" This fault was introduced by a previous APM software package and requires specific containment actions.
This document provides guidance for addressing the APM DTC C10129B fault, "High/Excessive Flow" This fault was...
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introduced by a previous APM software package and requires specific containment actions.
CBR - This document provides guidance for addressing the APM DTC C10129B fault, "High/Excessive Flow" This fault was...
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introduced by a previous APM software package and requires specific containment actions.
This CBR solution informs technicians that the U3000-05 System Programming Failure DTC following software updates has no...
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permanent solution currently available.
Fuel System
5 bulletinsSC - Volvo Trucks North America has introduced enhanced Liner EATS (Exhaust Aftertreatment System) Mounting Straps for...
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specific VN(4) and VN model vehicles.
CBR - Integrated Parking Cooler Diagnostics
Volvo Trucks has determined that 532 VN (4) model trucks may be equipped with chain-style anti-siphon fuel caps that...
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could interfere with proper engagement of the fuel cap threads, resulting in difficulty during installation.
These repair instructions are intended to address the following faults: P008A-00 (Low Pressure Fuel System Pressure Too...
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Low) and P0087-00 (Fuel Rail/ System Pressure- Tool Low Bank 1).
SERVICE CAMPAIGN - Fuel Injector Update
HVAC & Climate
3 bulletinsCBR - Parking Heater Inoperative.
CBR - VN(4) Parking Heater Plumbing.
CBR - Parking Heater Inoperative - VN (4).
Brakes
3 bulletinsThe purpose of this CBR is to outline the steps for adjusting brake pedal free play following Foot Brake Modulator (FBM)...
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replacement or when diagnostic code C10C3-77is present.
CBR - US17AbstractVolvo Chassis equipped with Volvo Active Driver Assist may display DTC / Fault code SPN 516103 FMI 19...
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on Premium Tech Tool ( PTT ) or J-Pro, and code 167 in Bendix ACOM software.
These repair instructions are intended to address the following faults: B1509-68 (Collision warning With Emergency...
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Brake, Input Signal Failure), U1061-00 and U1062-00 (Lost Communication With FLR Module or FL Camera).
Air Bags & Safety
2 bulletinsCBR - Upper Bunk Restraint System Plastic Gable Retention Field Fix.
CBR - Upper Bunk Restraint System Plastic Gable Retention Field Fix.
Transmission
2 bulletinsCBR - This bulletin provides guidance for identifying and addressing oil intrusion related to the Countershaft Brake...
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(CSB) in AMT-G transmissions.
CBR - Driver Display Popup Error "Door Is Open.
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Shift Transmission To Neutral." -Instrument Cluster Software Update