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Service bulletins for the 2020 Ram 1500

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.

1228 on file from NHTSA, as of 2026-10-19.

By type

By component

By trouble code

By topic

Only bulletins with component: Electrical system are shown. Show all

Bulletins, newest first
S20080001962021-03-01. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); ELECTRICAL SYSTEM:ALTERNATOR/GENERATOR/REGULATOR. Diagnostic Trouble Code (DTC) P065A ? Generator System Performance, Additional Information.
S20230000492021-03-01. Service bulletin. VISIBILITY; EQUIPMENT; ELECTRICAL SYSTEM. Driver And/Or Passenger Exterior Mirror Glass Intermittently Does Not Return To Original Position From Tilt Down Or Appears Stuck In Down Position
S20230000482021-03-01. Service bulletin. ELECTRICAL SYSTEM; LATCHES/LOCKS/LINKAGES; STRUCTURE. Left Rambox Lid Unlatches By Itself
S2008000182 Rev.2021-03-01. Service bulletin. ELECTRICAL SYSTEM; VISIBILITY. Driver Or Passenger Power Windows Do Not Go Up Or Down
S20080001922021-03-01. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRONIC STABILITY CONTROL:AUTOMATIC (ASC); ELECTRICAL SYSTEM. Check Engine Light (CEL) On, Electronic Stability Control (ESC) Indicator Light Illuminated, DTC?s C0042-28, P057B
90043372021-03-01. Service bulletin. STRUCTURE:BODY:DOOR:HANDLE:EXTERIOR; ELECTRICAL SYSTEM:ADAS:HUD:CAMERA/SENSOR; BACK OVER PREVENTION; STRUCTURE:BODY:TAILGATE. HANDLE, Tailgate For issues related to tailgate handle camera do not replace tailgate handle, the camera is serviceable and can be ordered through MOPAR separately as follows: 2019 - 68144068A$ 2020 - 68414414A$, 68144068A$ 2021 - 04672850A$
90043342021-03-01. Service bulletin. VISIBILITY:POWER WINDOW DEVICES AND CONTROLS; EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY; ELECTRICAL SYSTEM. Power Window Regulator or Motor Owners may complain that the Driver and or Passenger Windows are inoperative. Technician may find DTC?s B18BA-12 - Window Control - Circuit Short to Battery, B18BA-13 - Window Control - Circuit Open (stored or active). Replace the DDM or PDM per detailed repair information in Service Library or reference Star Online Publlication S2008000182. Replacing regulators or motors will not correct this issue.
08-015-212021-02-16. Service bulletin. ELECTRICAL SYSTEM. Radio Enhancements This bulletin involves updating the radio software level to 1848.34. Customers may experience one or more of the following:Radio display screen flickers. Radio resets with RPM less than 1000 RPM (DT and JL with 3.0L Diesel). Clock loses 6 seconds per day (JL with 5 inch screen). Ghost Touch, features, modes and App?s changing without drivers input. Bluetooth pop noise. Pop message ?SXM Wait? displayed for extended period of time. The radio resets.
S2108000025 Rev.2021-02-16. Service bulletin. ELECTRICAL SYSTEM. CEL Check Engine Lamp On, DTC P0158 O2 Sensor 2/2 Circuit High
S21080000252021-02-16. Service bulletin. ELECTRICAL SYSTEM. CEL Check Engine Lamp On, DTC P0158 O2 Sensor 2/2 Circuit High
S21080000222021-02-16. Service bulletin. ELECTRICAL SYSTEM. Service Trailer Brake Warning Message Displayed On The Cluster
S2025000005 Rev.2021-02-16. Service bulletin. ELECTRICAL SYSTEM. Malfunction Indicator Lamp (MIL) Illumination. Diagnostic Trouble Codes P0407 ? EGR Sensor B Circuit Low, or P0408 ? EGR Sensor B Circuit High Set
S2108000006 Rev.2021-02-16. Service bulletin. ELECTRICAL SYSTEM. Cluster Speedometer Digital Value Appears Slightly Discolored
S2108000003 Rev.2021-02-16. Service bulletin. ELECTRICAL SYSTEM; STEERING. Cluster Displays Blind Spot Alert Off Incompatible Trailer Message, Left Steering Wheel Switches Do Not Allow Update Or Change
08-100-202020-12-28. Service bulletin. ELECTRICAL SYSTEM:STARTER ASSEMBLY; ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. Incorrect Starter Motor Installed This bulletin involves inspecting and possible replacement of the starter motor, for a whining noise upon vehicle start up. The customer may hear a whining noise coming from the start motor when the vehicle is started.
S1908000102 Rev.2020-12-28. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. (Rev. A) Audio Mute On All Sources Except AM
S2008000126 Rev.2020-12-28. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. (Rev. B) RKE Has Reduced Range, Remote Start Inoperative, Multiple Keyless Go Push Attempts To Start
S20080001722020-12-28. Service bulletin. ELECTRICAL SYSTEM. Radio Screen Flickering When Using Apple CarPlay Or Android Auto.
S1925000008 Rev.2020-12-28. Service bulletin. ELECTRICAL SYSTEM; SERVICE BRAKES; FUEL SYSTEM, GASOLINE. (Rev. B) Malfunction Indicator Lamp (MIL) Illumination. Diagnostic Trouble Codes (DTCs) P20E8 ? Reductant Pressure Too Low and/or P208B ? Reductant Pump 1 Control Performance Set.
S20080001692020-12-28. Service bulletin. ELECTRICAL SYSTEM; STRUCTURE:BODY:DOOR; VISIBILITY:POWER WINDOW DEVICES AND CONTROLS. Drivers Front Window Makes Noise While Raising And Lowering
08-100-202020-12-21. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. Incorrect Starter Motor Installed This bulletin involves inspecting and possible replacement of the starter motor, for a whining noise upon vehicle start up. The customer may hear a whining noise coming from the start motor when the vehicle is started.
S2008000126 Rev.2020-12-21. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT; ENGINE. (Rev. B) RKE Has Reduced Range, Remote Start Inoperative, Multiple Keyless Go Push Attempts To Start
S20080001722020-12-21. Service bulletin. EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY; ELECTRICAL SYSTEM; EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. Radio Screen Flickering When Using Apple CarPlay Or Android Auto.
S1925000008 Rev.2020-12-21. Service bulletin. ELECTRICAL SYSTEM; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); ENGINE; FUEL SYSTEM, DIESEL. (Rev. B) Malfunction Indicator Lamp (MIL) Illumination. Diagnostic Trouble Codes (DTCs) P20E8 ? Reductant Pressure Too Low and/or P208B ? Reductant Pump 1 Control Performance Set.
S1625000005 Rev.2020-12-21. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:DIESEL; ELECTRICAL SYSTEM; FUEL SYSTEM, DIESEL. (Rev. A) Malfunction Indicator Light (MIL) Illuminated. Service Diesel Exhaust Fluid (DEF) System ? See Dealer Soon Message on Electronic Vehicle Information Center (EVIC) Along With Possible Diagnostic Trouble Code (DTC) P241D - SCR Inducement - Forced Engine Shutdown.

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