Ram 4500 Service Bulletins
949 manufacturer communications on file.
- October 2, 2025•Document ID: 11024054Service Bulletin/Repair InstructionsPOWER TRAIN
- Mfr Comm. #:
- 18-074-25 REV. A
- Date Added:
- October 8, 2025
- Manufacturer:
- RAM
SummaryFlash: 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):** ● **P0263 - 00 Cylinder 1 Contribution/balance. ● P0266 - 00 Cylinder 2 Contribution-balance. ● P0269 - 00 Cylinder 3 Contribution/balance. ● P0272 - 00 Cylinder 4 Contribution/balance. ● P0275 - 00 Cylinder 5 Contribution/balance. ● P0278 - 00 Cylinder 6 Contribution/balance. ● P026B - 00 Injection Timing Performance. ● P020A - 00 Cylinder 1 Injection Timing. ● P020B - 00 Cylinder 2 Injection Timing. ● P020C - 00 Cylinder 3 Injection Timing. ● P020D - 00 Cylinder 4 Injection Timing. ● P020E - 00 Cylinder 5 Injection Timing. ● P020F - 00 Cylinder 6 Injection Timing. ● P06B9 - 00 Cylinder 1 Glow Plug Circuit Performance. ● P06BA - 00 Cylinder 2 Glow Plug Circuit Performance. ● P06BB - 00 Cylinder 3 Glow Plug Circuit Performance. ● P06BC - 00 Cylinder 4 Glow Plug Circuit Performance. ● P06BD - 00 Cylinder 5 Glow Plug Circuit Performance. ● P06BE - 00 Cylinder 6 Glow Plug Circuit Performance. ● 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 Fuel System Sensor Circuit Intermittent. ● P20EE - 00 SCR NOX Catalyst Efficiency Below Threshold - Bank 1 Catalyst 1. ● P203F - 00 Reductant Level Too Low. ● P2698 - 00 Exhaust Aftertreatment Fuel Injector "A" Performance.** ● P1C54 - 00 SCR NOX Catalyst Missing. ● P056E - 00 Cold Start Turbocharger/Supercharger Boost Control "A" Performance. ● P242F - 00 Diesel Particulate Filter Restriction - Ash Accumulation. ● P1451 - 00 Diesel Particulate Filter System Performance. ● P0234 - 00 Turbocharger Overboost Condition. ● P20E8 - 00 Reductant Pressure Too Low. ● P208B - 00 Reductant Pump 1 Control Performance. Customers may also comment on one or more of the following: ● **Diesel Exhaust Fluid (DEF) level gauge inaccuracy. ● Poor cold start performance. ● Unable to initiate manual Diesel Particulate Filter (DPF) regen through EVIC.** ● Unable to engage Power Take-Off (PTO) in mobile condition while the vehicle is moving, but has no issue engaging PTO while the vehicle is stationary. ● Engine stalls under high PTO loads at high altitudes. ● PTO does not work during the split-shaft mode. ● Engine/Cab shake during engine shutdown. ● PTO light not blinking when PTO disengaged. ● Poor engine starting performance. ● DEF level gauge fluctuations. ● In cold conditions the engine automatically increases idle speed when in Park to help with warm-up. Once warmed up, it returns to normal idle speed. If the engine is cycling in and out of this elevated idle speed condition, the customer could complain that its not behaving properly. ● Poor alternator charging and battery life **This bulletin involves inspecting and possibly reprogramming the PCM with the latest available software.**
Associated Products (2)Associated Documents - September 30, 2025•Document ID: 11024040Service Bulletin/Repair InstructionsELECTRICAL SYSTEM
- Mfr Comm. #:
- 107615
- Date Added:
- October 8, 2025
- Manufacturer:
- RAM
SummarySENSOR - EXHAUST TEMPERATURE
Associated Products (8)Associated Documents - September 27, 2025•Document ID: 11023598Service Bulletin/Repair InstructionsELECTRICAL SYSTEM
- Mfr Comm. #:
- 08-326-25
- Date Added:
- October 2, 2025
- Manufacturer:
- RAM
SummarySecurity 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 Malfunction Indicator Light (MIL). This bulletin involves flashing the SGW to the latest software level in the case that the FOTA did not function.
Associated Products (2)Associated Documents - September 27, 2025•Document ID: 11023595Service Bulletin/Repair InstructionsELECTRICAL SYSTEM
- Mfr Comm. #:
- 08-323-25
- Date Added:
- October 2, 2025
- Manufacturer:
- RAM
SummarySecurity 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 Malfunction Indicator Light (MIL). This bulletin involves flashing the SGW to the latest software level in the case that the FOTA did not function.
Associated Products (2)Associated Documents - September 26, 2025•Document ID: 11023605Service Bulletin/Repair InstructionsPOWER TRAIN
- Mfr Comm. #:
- 21-039-25 REV. A
- Date Added:
- October 2, 2025
- Manufacturer:
- RAM
SummaryFlash: 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): ● 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. Customers may also experience one or more of the following: ● Vehicle stuck in default gear, and possibly stranded for many minutes. ● 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 faults P1D8A and P1D8B. This bulletin involves reprogramming the TCM with the latest available software.
Associated Products (2)Associated Documents - September 25, 2025•Document ID: 11023626Service Bulletin/Repair InstructionsSERVICE BRAKES
- Mfr Comm. #:
- S2508000075 REV.A
- Date Added:
- October 2, 2025
- Manufacturer:
- RAM
SummaryIntegrated Trailer Brake (ITB) Switch Removal
Associated Products (9)Associated Documents - September 18, 2025•Document ID: 11023326Service Bulletin/Repair InstructionsSTRUCTURE:BODY
- Mfr Comm. #:
- 23-008-25 REV. A
- Date Added:
- September 24, 2025
- Manufacturer:
- JEEP
SummaryExterior 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*
Associated Products (118)2026 Chrysler Pacifica2026 Chrysler Voyager2026 Dodge Charger2026 Dodge Durango2026 Jeep Compass2026 Jeep Recon2026 Jeep Wrangler2026 Ram 15002026 Ram 25002026 Ram 35002026 Ram 45002026 Ram 55002025 Alfa Romeo Stelvio2025 Alfa Romeo Tonale2025 Chrysler Pacifica2025 Chrysler Voyager2025 Dodge Charger2025 Dodge Durango2025 Dodge Hornet2025 Jeep Compass+ 98 moreAssociated Documents - September 18, 2025•Document ID: 11023325Service Bulletin/Repair InstructionsPOWER TRAIN
- Mfr Comm. #:
- 21-039-25
- Date Added:
- September 24, 2025
- Manufacturer:
- RAM
SummaryFlash: 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): ● 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. Customers may also experience one or more of the following: ● Vehicle stuck in default gear, and possibly stranded for many minutes. ● 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 faults P1D8A and P1D8B. This bulletin involves reprogramming the TCM with the latest available software.
Associated Products (1)Associated Documents - September 13, 2025•Document ID: 11023175Service Bulletin/Repair InstructionsFUEL/PROPULSION SYSTEM
- Mfr Comm. #:
- S2508000081
- Date Added:
- September 17, 2025
- Manufacturer:
- RAM
SummaryWater in Fuel (WIF) Warning Lamp on After Draining Fuel Filter Module
Associated Products (8)Associated Documents - September 12, 2025•Document ID: 11023168Service Bulletin/Repair InstructionsSUSPENSION
- Mfr Comm. #:
- 02-002-25 REV. A
- Date Added:
- September 17, 2025
- Manufacturer:
- JEEP
SummaryShock And Strut Diagnosis And Replacement Guidelines Leaking, noisy, or weak shocks or struts.
Associated Products (108)2026 Chrysler Pacifica2026 Chrysler Voyager2026 Dodge Charger2026 Jeep Compass2026 Jeep Wrangler2026 Ram 15002026 Ram 25002026 Ram 35002026 Ram 45002026 Ram 55002025 Alfa Romeo Stelvio2025 Alfa Romeo Tonale2025 Chrysler Pacifica2025 Chrysler Voyager2025 Dodge Charger2025 Dodge Durango2025 Dodge Hornet2025 Jeep Compass2025 Jeep Gladiator2025 Jeep Grand Cherokee+ 88 moreAssociated Documents - September 9, 2025•Document ID: 11023182Over The AirELECTRICAL SYSTEM
- Mfr Comm. #:
- OTHERDOC_148
- Date Added:
- September 17, 2025
- Manufacturer:
- RAM
SummaryGlobal 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 mode not working causing battery drain in some cases. This bulletin applies to vehicles equipped with a Global Telematics Box Module (TBM) (Sales Code RDG)
Associated Products (8)Associated Documents - September 6, 2025•Document ID: 11023082Service Bulletin/Repair InstructionsELECTRICAL SYSTEM
- Mfr Comm. #:
- S2508000074
- Date Added:
- September 10, 2025
- Manufacturer:
- RAM
SummaryRemote 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
Associated Products (8)Associated Documents - September 5, 2025•Document ID: 11023088Over The AirELECTRICAL SYSTEM
- Mfr Comm. #:
- OTHERDOC_147
- Date Added:
- September 10, 2025
- Manufacturer:
- RAM
SummaryPowertrain 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. Cab Chassis2025 - 2026 (DP) RAM 4500/5500 Cab Chassis Customers may experience one or more of the following: - Power Inverter (110V connection) drops out when shifting from P to D - DEF (Diesel Exhaust Fluid) level gauge inaccuracy - Poor cold start performance - Instrument Panel Cluste MIL (Malfunction Indicator Light) ON; Possible P-codes: P0087/P2540/P2543 Fuel Pressure P214D/P242B SCR Temperature P24DA PM Sensor P20EE SCR Efficiency P226C/P2281 Mass Charge Flow P229F System Outlet NOx Sensor P0100 MAF Sensor P203F DEF Level P0423 DOC Efficiency
Associated Products (8)Associated Documents - September 4, 2025•Document ID: 11023078Service Bulletin/Repair InstructionsSERVICE BRAKES
- Mfr Comm. #:
- S2508000075
- Date Added:
- September 10, 2025
- Manufacturer:
- RAM
SummaryIntegrated Trailer Brake (ITB) Switch Removal
Associated Products (10)Associated Documents - August 30, 2025•Document ID: 11022546Service Bulletin/Repair InstructionsELECTRICAL SYSTEM
- Mfr Comm. #:
- 08-166-25 REV. A
- Date Added:
- September 4, 2025
- Manufacturer:
- RAM
SummaryPower Window Inoperative Customers may experience the following: ● Power windows are inoperative after reaching the full open position This bulletin involves inspecting and possibly reprogramming the DDM and PDM with the latest available software.
Associated Products (2)Associated Documents - August 22, 2025•Document ID: 11022567Service Bulletin/Repair InstructionsWHEELS
- Mfr Comm. #:
- S2522000002
- Date Added:
- September 4, 2025
- Manufacturer:
- RAM
SummaryCustomer Indicates Tire Pressure Monitoring System (TPMS) Lights On Dash.
Associated Products (22)2025 Jeep Gladiator2025 Jeep Grand Cherokee2025 Jeep Grand Cherokee L2025 Jeep Grand Wagoneer2025 Jeep Wagoneer2025 Jeep Wrangler2025 Ram 15002025 Ram 25002025 Ram 35002025 Ram 45002025 Ram 55002024 Jeep Gladiator2024 Jeep Grand Cherokee2024 Jeep Grand Cherokee L2024 Jeep Grand Wagoneer2024 Jeep Wagoneer2024 Jeep Wrangler2024 Ram 15002024 Ram 25002024 Ram 3500+ 2 moreAssociated Documents - August 22, 2025•Document ID: 11022183Service Bulletin/Repair InstructionsWHEELS
- Mfr Comm. #:
- S2522000001
- Date Added:
- August 27, 2025
- Manufacturer:
- JEEP
SummaryTPMS Handling & Installation Best Practices
Associated Products (24)2025 Dodge Charger2025 Jeep Gladiator2025 Jeep Grand Cherokee2025 Jeep Grand Cherokee L2025 Jeep Grand Wagoneer2025 Jeep Wagoneer2025 Jeep Wagoneer S2025 Jeep Wrangler2025 Ram 25002025 Ram 35002025 Ram 45002025 Ram 55002024 Dodge Charger2024 Jeep Gladiator2024 Jeep Grand Cherokee2024 Jeep Grand Cherokee L2024 Jeep Grand Wagoneer2024 Jeep Wagoneer2024 Jeep Wagoneer S2024 Jeep Wrangler+ 4 moreAssociated Documents - August 22, 2025•Document ID: 11022182Service Bulletin/Repair InstructionsENGINE
- Mfr Comm. #:
- S2509000005 REV.A
- Date Added:
- August 27, 2025
- Manufacturer:
- RAM
SummaryLight Random Tick Noise From The Engine
Associated Products (16)Associated Documents - August 16, 2025•Document ID: 11022011Service Bulletin/Repair InstructionsSTRUCTURE:BODY
- Mfr Comm. #:
- 31-001-25 REV. B
- Date Added:
- August 21, 2025
- Manufacturer:
- RAM
SummaryAluminum 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.
Associated Products (74)2026 Chrysler Pacifica2026 Chrysler Voyager2026 Dodge Durango2026 Ram 25002026 Ram 35002026 Ram 45002026 Ram 55002025 Alfa Romeo Stelvio2025 Chrysler Pacifica2025 Chrysler Voyager2025 Dodge Durango2025 Jeep Gladiator2025 Jeep Renegade2025 Jeep Wrangler2025 Ram 15002025 Ram 25002025 Ram 35002025 Ram 45002025 Ram 55002024 Alfa Romeo Stelvio+ 54 moreAssociated Documents - August 15, 2025•Document ID: 11022016Service Bulletin/Repair InstructionsENGINE
- Mfr Comm. #:
- S2518000007
- Date Added:
- August 21, 2025
- Manufacturer:
- RAM
SummaryEngine Exhaust Brake Inoperative With No MIL Lamp Or Diagnostic Trouble Code (DTC
Associated Products (4)Associated Documents