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.

• 11029773Feb 25, 2026Transmission and drivetrain. The customer concern is Service Transmission, preventing the engine from shutting off. NOTE: The transmission will actually be in Park and able to hold the vehicle, but the cluster display would indicate Neutral, preventing the engine from shutting off
• 11029771Feb 25, 2026Electrical system. Customer States Navigation is Inaccurate, Showing Wrong City or State.
• 11029769Feb 25, 2026Electrical system. Mil-On/Check Engine Lamp (CEL), Antilock Brake System (ABS) Lamp, Diagnostic Trouble Code (DTCs).
• 11029762Feb 23, 2026Electrical system. Sensor - wheel speed
• 11029705Feb 21, 2026Electrical system. Harman R1H Uconnect 5 Radio Software Flash Error Codes
• 11029672Feb 21, 2026Electrical system. Flash: Diesel Exhaust Fluid Control Unit (DCU) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must SYMPTOM: exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● **P20BC-00 - Reductant Suction Line Heater Control Circuit High. - in Active or Stored status. ● P202C-00 - Reductant Tank Heater Control Circuit High. - in Active or Stored status. ●…
• 11029664Feb 21, 2026Brakes, Electrical system. Flash: Brake System Control Module (BSCM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must SYMPTOM: exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● C0037-2F - Left Rear Wheel Speed Sensor - Signal Erratic. ● C003A-2F - Right Rear Wheel Speed Sensor - Signal Erratic.
• 11029709Feb 19, 2026Body and structure. Bezel - media port
• 11029704Feb 19, 2026Electrical system. Uconnect Box Requires Service, Please Visit an Authorized Dealer Message on Display Message With DTCs B1498-13, B1498-19 or B1570-93
• 11029681Feb 19, 2026Electrical system, Transmission and drivetrain. Flash: Transmission Control Module (TCM) Updates Customers may comment on the following: SYMPTOM: ● Hesitation or delay when accelerating. Customer may state that this occurs when driving at speeds between 5 kph (5 mph) and 20 kph (12 mph) after having previously accelerated from a very low speed and having backed off of the accelerator pedal for a short time. This bulletin involves reprogramming the TCM with the…
• 11029680Feb 19, 2026Engine, Electrical system. Flash: Powertrain Control Module (PCM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must SYMPTOM: exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● **P2540-00 - Low Pressure Fuel System Sensor Circuit Range/Performance. ● P0506-00 - Idle Control System RPM - Lower Than Expected. ● P20CF-00 - Exhaust Aftertreatment Fuel Injector "A" Stuck…
• 11029702Feb 18, 2026Body and structure. Floor Console Center Storage Bin Door Inoperable And Or Stuck Closed.
• 11029698Feb 18, 2026Electrical system. Horn Sound Is Weak, Off Tone, Inoperative, Or Intermittent.
• 11029697Feb 17, 2026Electrical system. Active/Pending Diagnostic Trouble Code (DTC) P208B And/or P20E8 Setting In The Powertrain Control Module (PCM)
• 11029696Feb 17, 2026Electrical system. Active Diagnostic Trouble Code (DTC) U3FFF-00 Setting In The PCM
• 11029666Feb 17, 2026Electrical system. Flash: Telematics Box Module Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must SYMPTOM: exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● B1560 - 11 Cellular Antenna 1 - short to ground. ● B1561 - 11 Cellular Antenna 2 - short to ground. ● B1562 - 14 GPS Antenna short to ground or open. ● B22A9 - 96 ECU internal performance-component…
• 11029708Feb 16, 2026Electrical system. HEADLAMP
• 11029686Feb 16, 2026Body and structure, Electrical system. Universal Garage Door Opener Prior to replacing the UGDO or sun visor, call HomeLink® Customer Care at 1-800-355-3515 for a proper evaluation of the issue. If this does not correct the issue, please follow the steps in SOL: S2508000039
• 11028902Feb 14, 2026Electrical system. Front HDMI Port or Front Passenger Display Module (FPDM) Not Projecting Video
• 11028901Feb 14, 2026Electrical system. Hands-Free Voice Concerns Including No Voice Pickup, Muffled Audio, Distortion, or Intermittent Microphone Operation
• 11028894Feb 13, 2026Electrical system. Washer Fluid Warning Lamp Illuminated When Reservoir Is Full
• 11029720Feb 11, 2026Other or unknown. From: FCA REDCACTED CONTENT Sent: Wednesday, February 11, 2026 1:03 PM To FCA REDCACTED CONTENT Subject: FW: PLEASE READ- IMPORTANT- 03D Recall - Launching Today - 2.10 FCA REDCACTED CONTENT List of people and emails that received the recall list: FCA REDCACTED CONTENT Thank you, FCA REDCACTED CONTENT From: FCA REDCACTED CONTENT Sent: Tuesday, February 10, 2026 11:52 AM To: FCA REDCACTED CONTENT Subject: PLEASE…
• 11028866Feb 11, 2026Electrical system. Flash: Brake System Control Module (BSCM) Updates Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must SYMPTOM: exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● C0037-2F - Left Rear Wheel Speed Sensor - Signal Erratic. ● C003A-2F - Right Rear Wheel Speed Sensor - Signal Erratic.
• 11029715Feb 10, 2026Other or unknown. Please see thr attached sheet for those units you have impacted in stock. You can filter down on the excel file by your dealer name or dealer code. There are two tabs at the bottom of the sheet- showing the VIN detail and overall snapshot for Cinci. As soon as more information becomes available I will get that out to to ASAP. 03D - Certain 2025 and 2026 model year equipped with a trailer tow package.
• 11029711Feb 10, 2026Other or unknown. From: FCA REDACTED CONTENT Sent: Tuesday, February 10, 2026 11:29 AM Subject: HOT! 03D Recall - Launching Today - 2.10 Cleveland West / East Ohio! For your information, VINs live for the below recall went live today with remedy available. Please reach out with any questions! 03D - Certain 2025 and 2026 model year equipped with a trailer tow package.
• 11028891Feb 9, 2026Fuel system. Diesel Exhaust Fluid (DEF) Gauge Fluctuates Or Is Erratic. Diagnostic Trouble Code (DTC) P203F – Reductant Level Too Low.
• 11028886Feb 9, 2026Electrical system. Module - trailer brake & towing control
• 11028785Feb 6, 2026Electrical system, Brakes. Module - trailer brake & towing control
• 11028744Feb 6, 2026Electrical system, Body and structure. Rain Sensing Auto Wipers and Auto on Head Lamps Inoperative. Rain Sensor Internal Failure.
• 11028742Feb 2, 2026Engine. Hemi Water Pump Coolant Leak Inspection
• 11028238Jan 31, 2026Electrical system. 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): ● P0072-00 - Ambient Air Temperature Sensor Circuit "A" Low. ● P0087-00 - Fuel Rail Pressure Too Low. ● P2540-00 - Low Pressure Fuel System Sensor Circuit Range/Performance. ● P2543-00 - Low Pressure…
• 11028227Jan 31, 2026Electrical system. Flash: Body Control Module (BCM) Updates Customers may comment on the following: ● The AUX switches Fig. 1 do not remember (hold) the last position the switches were in after the ignition is cycled. ● Vehicles equipped with booms may experience operators stuck in booms as the vehicle has shut off during operations, leaving the boom operator with no way to restart the vehicle. This bulletin involves inspecting and…
• 11028219Jan 28, 2026Brakes, Electrical system. Flash: Central ADAS Decision Module (CADM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set at least one of the following Diagnostic Trouble Codes (DTCs): ● C2203-00 - Current VIN Missing/Mismatch. ● C008E-00 - ECU Internal Performance with Environmental Data Decode Byte: APP_FATAL_ERROR_APP_CONFIGURATION_ERROR_FAULT.
• 11028240Jan 27, 2026Transmission and drivetrain. Flash: Transmission Control Module (TCM) Updates Customers may also experience one or more of the following: ● Customer is unable to switch the ignition to OFF when in Park gear. ● After shifting into Park, the Instrument Panel Cluster (IPC) will display that the transmission is in Neutral. NOTE: The transmission will actually be in Park and able to hold the vehicle, but the cluster display would indicate Neutral…
• 11027849Jan 23, 2026Electrical system. Flash: Radio Frequency Hub Module (RFHM) Updates Technician may find the vehicle has set at least one of the following Diagnostic Trouble Codes (DTCs): ● B1A08-00 - RKE Fob 1 Performance. ● B1A09-00 - RKE Fob 2 Performance. Customers may also comment on one or more of the following: ● Lock / unlock from keyfob inoperable. ● Passive entry inoperable. This bulletin involves reprogramming of the RFHM with the latest…
• 11027839Jan 23, 2026Other or unknown. Diagnostic Trouble Code (DTC) P2482-00 Exhaust Gas Temperature Sensor Circuit High – Bank 1 Sensor 5
• 11027838Jan 23, 2026Seat belts. Seatbelt Slow Retraction.
• 11027832Jan 19, 2026Other or unknown. Module kit - urea pump/level unit
• 11027736Jan 16, 2026Electrical system. Rain Sensing Auto Wipers and Auto on Head Lamps Inoperative. Rain Sensor Internal Failure.
• 11027730Jan 16, 2026Transmission and drivetrain. 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): ● P0420 - Catalyst System Efficiency Below Threshold Bank 1. ● P0430 - Catalyst System Efficiency Below Threshold Bank 2. Customers may also experience the following: ● Catalyst damage and restricted…
• 11027727Jan 16, 2026Electrical system. Speaker Diagnostic Procedure Rattle, buzz and squeak coming from specific speakers.
• 11027634Jan 8, 2026Transmission and drivetrain. Flash: Transmission Control Module (TCM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle may exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● P0826-00 - Up/Down Shift Switch. ● P0827-00 - Up/down Shift Switch Circuit Low. ● P085F-00 - Up And Down Shift Switch Circuit Range/performance. Customers may also experience one or more of the…
• 11027631Jan 8, 2026Transmission and drivetrain. Flash: Transmission Control Module (TCM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle may exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● P0826-00 - Up/Down Shift Switch. ● P0827-00 - Up/down Shift Switch Circuit Low. ● P085F-00 - Up And Down Shift Switch Circuit Range/performance. Customers may also experience one or more of the…
• 11027653Jan 7, 2026Electrical system. HEADLAMP – NONE
• 11026806Dec 17, 2025Electrical system. Customer states Navigation is inaccurate, showing in wrong city or state.
• 11026677Dec 12, 2025Electrical system. Telematics Box Module (TBM) Backup Battery Replacement When DTC B1E21 Is Present Technicians 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.
• 11026642Dec 12, 2025Seats. Comfort Seat Module (CSM) or Comfort Steering Wheel Module (CSWM) do Not Operate
• 11026640Dec 12, 2025Other or unknown. Buzz Squeak Rattle (BSR) Vibration From Under Vehicle While Driving.
• 11026660Dec 10, 2025Electrical system. If the DTC B1E21-96: Backup Battery-Component Internal Failure is active and customer states Popup message will show at the radio: "Battery of Uconnect Box requires service. SOS call and related functions may be unavailable. Please visit an authorized dealer." PLEASE do not Replace the TBM module, only replace TBM Internal Battery (inside Telematics Box Module) and order PN68493347
• 11026634Dec 10, 2025Brakes. Diagnostic Trouble Code (DTC) C0050-00-Brake System Hydraulic Leak Set After Recent Repair.

← All problems reported for the 2026 Ram 3500