2026 Ram 3500 Technical Service Bulletins

247 technical service bulletins (TSBs) are on record for the 2026 Ram 3500. TSBs are notes manufacturers send to dealers about repair procedures for issues seen in the field. They are not recalls and do not by themselves mean a vehicle has a fault.

• 11026557Dec 6, 2025Other or unknown. Diesel Exhaust Fluid (DEF) leaking around the gasket mount of the DEF doser causing an external, white, deposit build-up.
• 11026549Dec 5, 2025Electrical system. Telematics Box Module (TBM) Backup Battery Replacement When DTC B1E21 Is Present echnicians may experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle may exhibit/set the following Diagnostic Trouble Code (DTC): ● B1E21-96 - Backup Battery Component Internal Failure
• 11026552Dec 3, 2025Electrical system. Diagnostic Trouble Code (DTC) B15A1-00 Media Port Connection 1 Connection Found Set.
• 11026066Nov 26, 2025Electrical system, Engine. Vehicle Ignition Status Will Change From “RUN” to “OFF” After a Specific Number of Minutes Following The Use of The Wired Remote Start Stop (WRSS)
• 11025736Nov 20, 2025Seats, Steering, Electrical system. Heated Seats And Heated Steering Wheel Inoperative
• 11025732Nov 19, 2025Electrical system. Vehicle Shifter Will Not Shift Out Of Park.
• 11025716Nov 18, 2025Other or unknown. Flash: Powertrain Control Module (PCM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● P0087-00 - Fuel Rail Pressure Too Low. ● P2540-00 - Low Pressure Fuel System Sensor Circuit Range/Performance. ● P2543-00 - Low Pressure Fuel System Sensor Circuit Intermittent. ● P214D-00 - SCR NOx…
• 11025642Nov 15, 2025Other or unknown. High Soot Load In the Diesel Particulate Filter (DPF) Setting DTC P242F
• 11025631Nov 15, 2025Wheels, Electrical system. Max Tow Right and Left Rear Wheel Speed Sensors Inoperable Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● C003A-62 - Right Rear Wheel Speed Sensor - Signal Compare Failure. ● C0037-62 - Left Rear Wheel Speed Sensor - Signal Compare Failure. ● C003A-2F - Right Rear Wheel Speed Sensor - Signal…
• 11025641Nov 14, 2025Electrical system. No Wireless Charging Or Slow Wireless Charging
• 11025723Nov 13, 2025Other or unknown. Detector - evaporative system integrity module
• 11025722Nov 13, 2025Other or unknown. Detector - evaporative system integrity module
• 11025639Nov 11, 2025Electrical system. Trailer Light Check Appears on Vehicles Not Equipped With the Option
• 11025505Nov 8, 2025Transmission and drivetrain. Flash: Transmission Control Module (TCM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● P0827-00 - Up and Down Shift Switch Circuit Low. ● P0826-00 - Up and Down Shift Switch Circuit. ● P085F-00 - Up and Down Shift Switch Circuit Range/Performance.
• 11025502Nov 8, 2025Transmission and drivetrain. Flash: Transmission Control Module (TCM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● P0827-00 - Up and Down Shift Switch Circuit Low. ● P0826-00 - Up and Down Shift Switch Circuit. ● P085F-00 - Up and Down Shift Switch Circuit Range/Performance.
• 11025512Nov 6, 2025Electrical system. Intermittent Uconnect Box Requires Service Message. TBM Setting Stored Or Pending DTCs B22A9, B1560, B1561, B1562
• 11025507Nov 6, 2025Other or unknown. CORE - HEATER
• 11025506Nov 6, 2025Other or unknown. CORE - HEATER
• 11025035Nov 1, 2025Brakes. Auto Emergency Braking Unavailable/Service Required Message on Cluster
• 11025034Nov 1, 2025Electrical system. Vehicle Ignition Status Will Change From “RUN” to “OFF” After a Specific Number of Minutes Following The Use of The Wired Remote Start Stop (WRSS)
• 11024577Oct 24, 2025Transmission and drivetrain. Driveline Vibration. Prop Shaft Diagnostic Information.
• 11024559Oct 22, 2025Engine. Cummins Valvetrain Noise Diagnostics Customers may comment on one or more of the following: ● Ticking noise. ● Clicking noise. ● Engine noise.
• 11024619Oct 18, 2025Electrical system. Remote Keyless Entry (RKE) Not Functional With One of the Paired Keyfobs, Passive Entry/ Keyless Go functions Would be Operational
• 11024593Oct 18, 2025Electrical system. Security Gateway Module (SGW) Software Update Customers may experience one or more of the following: ● SGW module is not responding to diagnostics and showing offline. ● If message for FOTA apprears, then a manual flash is required for SGW update. ● Diagnostic Trouble Code (DTC) U3033 - 00 Control module security certificate Missing/Invalid is active or stored and cannot clear. This DTC will not turn on the…
• 11024591Oct 18, 2025Electrical system. Security Gateway Module (SGW) Software Update Customers may experience one or more of the following: ● SGW module is not responding to diagnostics and showing offline. ● If message for FOTA apprears, then a manual flash is required for SGW update. ● Diagnostic Trouble Code (DTC) U3033 - 00 Control module security certificate Missing/Invalid is active or stored and cannot clear. This DTC will not turn on the…
• 11024610Oct 17, 2025Electrical system. 1. SGW DTC - U3033-00 and/or U3033-01 Active or store and cannot clear. If the security gateway module has set the security module certificate missing or invalid DTC (U3033-00 or U3033-01), it is being set erroneously. This DTC does not have any customer related symptoms affecting a vehicles operation. No service repairs and or parts replacements should be attempted for this specific DTC, the DTC will always appear…
• 11024614Oct 16, 2025Electrical system, Brakes. Brakes Appear to Drag After Setting Trailer Brake Feature in the Radio Settings
• 11024311Oct 6, 2025Wheels. Tire Pressure Monitor (TPM) Warning Lamp On Or Flashing. Sensor(s) Not Reading And Or Showing Dashes.
• 11024040Sep 30, 2025Electrical system. Sensor - exhaust temperature
• 11023596Sep 27, 2025Electrical system. Security Gateway Module (SGW) Software Update Customers may experience one or more of the following: ● SGW module is not responding to diagnostics and showing offline. ● If message for FOTA apprears, then a manual flash is required for SGW update. ● Diagnostic Trouble Code (DTC) U3033 - 00 Control module security certificate Missing/Invalid is active or stored and cannot clear. This DTC will not turn on the…
• 11023594Sep 27, 2025Electrical system. Security Gateway Module (SGW) Software Update Customers may experience one or more of the following: ● SGW module is not responding to diagnostics and showing offline. ● If message for FOTA apprears, then a manual flash is required for SGW update. ● Diagnostic Trouble Code (DTC) U3033 - 00 Control module security certificate Missing/Invalid is active or stored and cannot clear. This DTC will not turn on the…
• 11023626Sep 25, 2025Brakes. Integrated Trailer Brake (ITB) Switch Removal
• 11023326Sep 18, 2025Body and structure. Exterior Front Lamps Condensation Clearing Procedure *Some customers may report that on occasion vehicle exterior front lamps (headlamps, fog lamps, grille lamps, logo lamps or signature lamps) assemblies are fogged with a light layer of condensation on the inside of the lenses*
• 11023175Sep 13, 2025Fuel system. Water in Fuel (WIF) Warning Lamp on After Draining Fuel Filter Module
• 11023168Sep 12, 2025Suspension. Shock And Strut Diagnosis And Replacement Guidelines Leaking, noisy, or weak shocks or struts.
• 11023182Sep 9, 2025Electrical system. Global Telematics Box Module Over The Air Update from R5N & R5R1 to R5T TBM2.H Software Version (FOTA) Customers may experience one or more of the following: - Error display of "Uconnect Box Requires Service/Wifi Unavailable" popups; [ TBM DTC B22A9-96 Internal Performance Failure ]. - Error display of "Uconnect Box Requires Service" popups; [ TBM DTCs B1560, B1561, B1562 - Antenna loose connection ]. - TBM sleep…
• 11023082Sep 6, 2025Electrical system. Remote Keyless Entry (RKE) Has a Reduced Range, Remote Start Inoperative, Multiple Keyless-Go Push Attempts to Start, Key Not Detected message, Tire Pressure Warning Lamp On, Passive Inoperative
• 11023088Sep 5, 2025Electrical system. Powertrain Contol Module Over The Air Update to V2B (Diesel Only) Software Version (FOTA) 2025 - 2026 (DJ) RAM 2500 Pickup 2025 - 2026 (D2) RAM 3500 Pickup 2025 - 2026 (DD) RAM 3500 Cab Chassis 2025 - 2026 (DF) RAM 3500 10K Lb.
• 11023078Sep 4, 2025Brakes. Integrated Trailer Brake (ITB) Switch Removal
• 11022563Aug 29, 2025Electrical system. For vehicles built with the wrong IPC (MPH or KPH) Dealer(s) need to wait to order any cluster in (kph or mph) until the dealer instructions for 79C are released.
• 11022011Aug 16, 2025Body and structure. Aluminum Body Panel Corrosion Repair Aluminum corrosion or bubbling along the leading edge of hood, hinges or other exterior surface areas of the hinges, doors, fenders, swing gates or liftgates.
• 11022028Aug 14, 2025Electrical system. Radio Over The Air Update from U39.E to U40.C R1H Software Version (FOTA) Customers may experience one or more of the following: - Navigation non-functional, not updating current position. - Screen Off hard key inoperative, Soft key on radio screen still operational. - CarPlay and Android Auto stability issues.
• 11022012Aug 14, 2025Body and structure. Aluminum Body Panel Corrosion Repair Aluminum corrosion or bubbling along the leading edge of hood, hinges or other exterior surface areas of the hinges, doors, fenders, swing gates or liftgates.
• 11022003Aug 13, 2025Body and structure. Aluminum Body Panel Corrosion Repair Aluminum corrosion or bubbling along the leading edge of hood, hinges or other exterior surface areas of the hinges, doors, fenders, swing gates or liftgates
• 11021844Aug 7, 2025Transmission and drivetrain. When customer complaint is related to inoperative 4 Wheel Drive shifter, loss of 4WD function and/or 4WD related MIL please reference SOL Case #S2508000062 prior to replacement of Transfer Case shift motor.
• 11021585Jul 28, 2025Electrical system. LAMP - DOME
• 11021034Jul 21, 2025Other or unknown. Sensor - exhaust temperature

← All problems reported for the 2026 Ram 3500