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Service bulletins for the 2020 Ram 2500

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.

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

By type

By component

By trouble code

By topic

Bulletins, newest first
25-008-242024-11-18. Service bulletin. UNKNOWN OR OTHER. "Flash: Diesel Exhaust Fluid (DEF) Dosing Control Unit (DCU) Update Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set the following Diagnostic Trouble Code (DTC): ● P21C4-00 - Reductant Line Heater Relay Control Circuit High. ● U11C1-00 - Reductant Control Module Received Implausible Data From ECM/PCM. These DTCs will occur after installation of service DCU 68458603AB. This bulletin involves reprogramming the DCU with the latest available software."
S2422000001 REV.C2024-11-13. Service bulletin. WHEELS; ELECTRICAL SYSTEM. Tire Pressure Monitor (TPM) Service Information. TPM Lamp On.
1012322024-11-07. Service bulletin. POWER TRAIN. Plate - Planetary
1010942024-11-06. Service bulletin. POWER TRAIN. TRANSMISSION KIT - WITH TORQUE CONVERTER
1010922024-11-06. Service bulletin. POWER TRAIN. TRANSMISSION KIT - WITH TORQUE CONVERTER
1010942024-11-01. Service bulletin. POWER TRAIN. TRANSMISSION KIT - WITH TORQUE CONVERTER
1010922024-11-01. Service bulletin. POWER TRAIN. TRANSMISSION KIT - WITH TORQUE CONVERTER
1004982024-11-01. Service bulletin. ENGINE. MODULE - ENGINE CONTROLLER
1007742024-11-01. Service bulletin. ELECTRICAL SYSTEM. SWITCH - HEADLAMP
S24220000032024-10-10. Service bulletin. WHEELS. Trailer Tire Pressure Monitor (TTPM) Programming Tips And Operation Information.
25-006-242024-10-08. Service bulletin. UNKNOWN OR OTHER; ENGINE. "Diesel Exhaust Fluid (DEF) Fluid Freezing Warranty Extension XR1 Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set the following Diagnostic Trouble Code (DTC): ● P203E-00 - Reductant Level Sensor 1 Circuit Intermittent-Erratic. Customers may also experience one or more of the following: ● Repeated freeze/thaw cycles of the urea tank to cause solid DEF crystals to form and settle on the focus tube, blocking the level sensor signal. ● Rapid temperature swings from below freezing to above freezing causing an incomplete thaw of the DEF tank. When the vehicle is powered on, the diagnostic is enabled due to thawed DEF at the tank bottom surface, but the fluid in the center is still partially frozen. ● Not following the proper DEF fill procedure and overfilling the tank. This bulletin involves replacing the urea delivery module and possibly updating the Dosing Control Unit (DCU) software"
25-007-242024-10-08. Service bulletin. UNKNOWN OR OTHER; ENGINE. "Diesel Exhaust Fluid (DEF) Fluid Freezing Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set the following Diagnostic Trouble Code (DTC): ● P203E-00 - Reductant Level Sensor 1 Circuit Intermittent-Erratic. Customers may also experience one or more of the following: ● Repeated freeze/thaw cycles of the urea tank to cause solid DEF crystals to form and settle on the focus tube, blocking the level sensor signal. ● Rapid temperature swings from below freezing to above freezing causing an incomplete thaw of the DEF tank. When the vehicle is powered on, the diagnostic is enabled due to thawed DEF at the tank bottom surface, but the fluid in the center is still partially frozen. ● Not following the proper DEF fill procedure and overfilling the tank This bulletin involves replacing the urea delivery module and grade vent valve and updating the Dosing Control Unit (DCU) software This bulletin involves replacing the urea delivery module and possibly updating the Dosing Control Unit (DCU) software"
978022024-10-08. Service bulletin. ELECTRICAL SYSTEM. SWITCH - HEADLAMP
S24230000432024-10-04. Service bulletin. ELECTRICAL SYSTEM. Dome Lamp LED And Incandescent Bulb Servicing.
14-008-242024-10-01. Service bulletin. UNKNOWN OR OTHER. "Diesel Exhaust Fluid (DEF) Fluid Freezing Warranty Extension XR1 Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set the following Diagnostic Trouble Code (DTC): ● P203E-00 - Reductant Level Sensor 1 Circuit Intermittent-Erratic. Customers may also experience one or more of the following: ● Repeated freeze/thaw cycles of the urea tank to cause solid DEF crystals to form and settle on the focus tube, blocking the level sensor signal. ● Rapid temperature swings from below freezing to above freezing causing an incomplete thaw of the DEF tank. When the vehicle is powered on, the diagnostic is enabled due to thawed DEF at the tank bottom surface, but the fluid in the center is still partially frozen. ● Not following the proper DEF fill procedure and overfilling the tank. This bulletin involves replacing the urea delivery module and possibly updating the Dosing Control Unit (DCU) software."
1006812024-10-01. Warranty extension. UNKNOWN OR OTHER; ENGINE; POWER TRAIN. Warranty Bulletin D-24-16 (XR1) Urea Delivery Module – Select 2019 - 2022 RAM Trucks (DJ/D2/DD/DP)
S2208000153 REV.B2024-09-27. Service bulletin. ELECTRICAL SYSTEM; WHEELS. Tire Pressure Lamp Flashing, No Tire Pressures Displayed, “Tire Pressure Module (TPM) System Unavailable” Message Displayed on Cluster
1005992024-09-24. Warranty extension. POWER TRAIN. FCA Caribbean Warranty Bulletin ID-24-16 Rev. Announces the addition of the Rear Axle Assembly replacement for 2019 - 2024 RAM 3500 Cab Chassis (DD), RAM 4500/ 5500 Cab Chassis (DP), RAM 3500 Pickup (D2), RAM 2500 Pickup (DJ), RAM 1500 Pickup (DS) and RAM 1500 Pickup (DT) vehicles to the Powertrain Pre-Authorization program to ensure proper repair of Rear Axle Assembly failures and to assist in quality improvements. REV.A
1005952024-09-24. Warranty extension. POWER TRAIN. WARRANTY BULLETIN D-24-15 announces the addition of the Rear Axle Assembly replacement for 2019 - 2024 RAM 3500 Cab Chassis (DD), RAM 4500/ 5500 Cab Chassis (DP), RAM 3500 Pickup (D2), RAM 2500 Pickup (DJ), RAM 1500 Pickup (DS) and RAM 1500 Pickup (DT) vehicles to the Powertrain Pre-Authorization program for all dealers (Base, Plus & Premium) to ensure proper repair of Rear Axle Assembly failures and to assist in quality improvements. REV.A
S228A000017 REV.A2024-09-23. Service bulletin. ELECTRICAL SYSTEM. Battery Drain Suspected or "Identified" From USB or Media Hub
S2423000027 REV.A2024-09-06. Service bulletin. ELECTRICAL SYSTEM. Horn Sound Is Weak, Off Tone, Or Inoperative.
S24230000392024-08-19. Service bulletin. ELECTRICAL SYSTEM. Wiper Motor Inoperative. Wiper Doesn’t Work or Stops Randomly On Glass
991502024-07-31. Other. UNKNOWN OR OTHER; ENGINE. MODULE KIT - UREA PUMP/LEVEL UNIT
993992024-07-31. Other. SERVICE BRAKES. MODULE - ANTI-LOCK BRAKE SYSTEM
994002024-07-31. Other. SERVICE BRAKES. MODULE - ANTI-LOCK BRAKE SYSTEM

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