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Service bulletins for the 2025 Ram 4500

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

262 on file from NHTSA, as of 2026-10-19.

By type

By component

By trouble code

Bulletins, newest first
08-021-262026-02-04. Service bulletin. ELECTRICAL SYSTEM; SERVICE BRAKES. 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. Customers may also comment on one or more of the following: ● The Instrument Panel Cluster (IPC) is displaying one or more of the following messages: ○ "ACC/FCW Unavailable Service Required". ○ "ACC/FCW Limited Functionality". ○ "Active Lane Management Limited Functionality." ○ "Active Lane Management Unavailable Service Required". ○ "Automatic Emergency Braking (AEB) Limited Service Required". ○ "AEB Unavailable Service Required". ○ "Blindspot Detection Unavailable Service Required" ○ "Blindspot Detection Limited Functionality" ● Customer states that the ADAS features are disabled. This bulletin involves reprogramming of the CADM with the latest available software and possibly performing a Forward Facing Camera (FFC) Dynamic Service Alignment / Calibration procedure. J08 FSAR-TSB-6774 -2-
08-017-26 REV.A2026-02-04. Service bulletin. ELECTRICAL 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 available software.
08-017-252026-01-28. Service bulletin. ELECTRICAL 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 available software.
S26090000012026-01-28. Service bulletin. UNKNOWN OR OTHER. Diagnostic Trouble Code (DTC) P2482-00 Exhaust Gas Temperature Sensor Circuit High – Bank 1 Sensor 5
S26100000012026-01-28. Service bulletin. SEAT BELTS. Seatbelt Slow Retraction.
1063472026-01-28. Service bulletin. UNKNOWN OR OTHER. MODULE KIT - UREA PUMP/LEVEL UNIT
S2308000120 REV.E2026-01-21. Service bulletin. ELECTRICAL SYSTEM. Rain Sensing Auto Wipers and Auto on Head Lamps Inoperative. Rain Sensor Internal Failure.
1093562026-01-14. Service bulletin. ELECTRICAL SYSTEM. HEADLAMP – NONE
21-002-262026-01-14. Service bulletin. POWER TRAIN. 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 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, preventing the engine from shutting off.** ● Rough/bumpy 2-3 power on upshifts and/or 3-2 coast down shifts. ● Vehicle enters into limp home mode. Other software improvements: ● Decreased sensitivity to DTCs P1D8A and P1D8B. This bulletin involves reprogramming the TCM with the latest available software.
S258A0000252025-12-23. Service bulletin. ELECTRICAL SYSTEM. Customer states Navigation is inaccurate, showing in wrong city or state.
08-394-25 REV. A2025-12-17. Service bulletin. ELECTRICAL 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.
91007342025-12-17. Service bulletin. ELECTRICAL 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
S25080001072025-12-17. Service bulletin. SEATS. Comfort Seat Module (CSM) or Comfort Steering Wheel Module (CSWM) do Not Operate
S25050000032025-12-17. Service bulletin. SERVICE BRAKES. Diagnostic Trouble Code (DTC) C0050-00-Brake System Hydraulic Leak Set After Recent Repair.
S258A0000212025-12-11. Service bulletin. ELECTRICAL SYSTEM. Diagnostic Trouble Code (DTC) B15A1-00 Media Port Connection 1 Connection Found Set.
08-394-252025-12-11. Service bulletin. ELECTRICAL 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
08-343-25 REV. A2025-12-11. Service bulletin. ELECTRICAL SYSTEM. Flash: Instrument Panel Cluster (IPC) Updates Customers may experience one or more of the following: ● **The IPC does not display the correct Tire Pressure Monitoring System (TPMS) graphic in the IPC (For dually vehicles only) Fig. 1.** ● While driving, resetting the Diesel Particulate Filter (DPF) gauge causes the IPC to freeze on that screen. The left-side steering wheel controls (used for navigating the IPC) becomes unresponsive while the right-side controls for cruise control remained functional. ● Power Take-Off (PTO) Password feature not able to reset. ● The IPC may incorrectly display an airbag warning light. ● Opening the driver door while the IPC is in sleep mode may cause the analog gauges to momentarily flutter. ● The navigation option does not appear in the main IPC menu. However, it can still be accessed through the Favorites screen. (When cycling through the main menu, option #5 is listed as Audio, but in the Favorites menu, option #5 correctly shows as Navigation) This bulletin involves updating the IPC with the latest available software.
S2508000096 REV.A2025-12-03. Service bulletin. ENGINE; ELECTRICAL 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)
S25240000142025-11-26. Service bulletin. ELECTRICAL SYSTEM; SEATS; STEERING. Heated Seats And Heated Steering Wheel Inoperative
S25230000882025-11-26. Service bulletin. ELECTRICAL SYSTEM. Vehicle Shifter Will Not Shift Out Of Park.
1084582025-11-26. Service bulletin. UNKNOWN OR OTHER. DETECTOR - EVAPORATIVE SYSTEM INTEGRITY MODULE
1084612025-11-26. Service bulletin. UNKNOWN OR OTHER. DETECTOR - EVAPORATIVE SYSTEM INTEGRITY MODULE
14-016-252025-11-26. Service bulletin. FUEL/PROPULSION SYSTEM. Unable To Install The Left-Hand Power Take-Off (PTO) Unit Upfitters or technicians may experience the following: ● Unable to install the left-hand PTO unit because of an interference with the fuel line engine bundle. This bulletin involves replacing the fuel line bundle or possibly giving the fuel line bundle to a third party upfitter
S2308000034 REV.A2025-11-19. Service bulletin. ELECTRICAL SYSTEM. No Wireless Charging Or Slow Wireless Charging
S25080000992025-11-19. Service bulletin. ELECTRICAL SYSTEM. Trailer Light Check Appears on Vehicles Not Equipped With the Option

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.