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Service bulletins for the 2021 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.

1129 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
1088862025-12-11. Service bulletin. ELECTRICAL SYSTEM. SENSOR - ACCELERATION
S2323000020 REV.B2025-10-02. Service bulletin. STRUCTURE:BODY; ELECTRICAL SYSTEM. Power Side Steps Reverse, Stop In Motion, And/Or Do Not Deploy Or Stow
S25190000092025-10-02. Service bulletin. ELECTRICAL SYSTEM; STEERING. Diagnostic Trouble Code (DTC) C221F-00, C2223-00, C221C-00, C0051-54 Present After Electric Power Steering (EPS) Replacement.
08-315-252025-10-02. Service bulletin. ELECTRICAL SYSTEM. Flash: Amplifier (AMP) Diagnostic and System 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):** ● B143B-12 - ANC Microphone 1-Circuit Short To Battery. ● B143C-12 - ANC Microphone 2-Circuit Short To Battery. ● B143E-12 - ANC Microphone 3-Circuit Short To Battery. ● B143F-12 - ANC Microphone 4-Circuit Short To Battery. NOTE: The DTCs are wrongly set and do not affect Active Noise Cancellation (ANC) performance This bulletin involves updating the AMP with the latest available software.
08-241-252025-08-13. Service bulletin. ELECTRICAL SYSTEM. Flash: Park Assist Module (PAM) Updates *Customers must experience one or more of the following:** ● **Park Assist is inoperative.** ● False braking alerts while backing up when there’s nothing behind the vehicle. This bulletin involves updating the PAM module with the latest available software.
1062412025-08-06. Service bulletin. ELECTRICAL SYSTEM. LAMP - DOME
S258A0000172025-08-06. Service bulletin. ELECTRICAL SYSTEM. Door speaker Inoperative or No Sound
S2422000001 REV.D2025-07-31. Service bulletin. ELECTRICAL SYSTEM. Tire Pressure Monitor (TPM) Service Information. TPM Lamp On.
08-221-252025-07-31. Service bulletin. ELECTRICAL SYSTEM. 115V Power Outlet LED Always On The amber LED remains continuously illuminated, regardless of whether the switch button is activated. This bulletin involves replacing the inverter switch.
S25190000062025-07-23. Service bulletin. ELECTRICAL SYSTEM; STEERING. Steering Repair Information Involving Toe Angle. Tie Rod And Or Electric Power Steering (EPS) Units.
S2208000138 REV.B2025-07-09. Service bulletin. ELECTRICAL SYSTEM. Decreased Remote Start And RKE Range. Tire Pressure Sensors Values Are Not Displayed
S25230000622025-07-02. Service bulletin. ELECTRICAL SYSTEM. Bumper Mounted 7 Pin Trailer Tow Connector
1049742025-06-26. Service bulletin. ELECTRICAL SYSTEM. LAMP - DOME
91005922025-05-29. Service bulletin. ELECTRICAL SYSTEM. LAMP Courtesy/Ambient Courtesy / Ambient Lamp: Light guide not fully seated into the retainer during IP sub-assembly due to inconsistent operator installation effort, leading to latent BSR issue that manifests under customer usage conditions. Solution: remove and reinstall light guide to be fully seated in the bracket retainer.
S2323000002 REV.A2025-05-19. Service bulletin. ELECTRICAL SYSTEM. "Washer Light On And Will Not Turn Off After Adding Washer Solvent."
1037742025-05-01. Service bulletin. ELECTRICAL SYSTEM. LAMP - DOME
S25230000242025-04-04. Service bulletin. STRUCTURE:BODY; ELECTRICAL SYSTEM. Rear Defogger Solder Terminals Detached.
S2408000015 REV.D2025-04-03. Service bulletin. ELECTRICAL SYSTEM. Remote Keyless Entry (RKE) Functions Do Not Work, Intermittent Vehicle Response When Using the RKE, Key Not Programmed, Adding Remote Start
91005002025-02-26. Service bulletin. ELECTRICAL SYSTEM. Touchscreen For all infotainment system repairs (touchscreens, radios, etc.), refurbished parts may be available. Follow the Infotainment Ordering guide available under the "Parts" section of Dealer Connect: DealerCONNECT> Parts> News& Information> Audio & Electronic Products Exchange Process
23-008-252025-02-20. Service bulletin. ELECTRICAL SYSTEM; STRUCTURE:BODY. "Headlamp Condensation Clearing Procedure Some customers may report that on occasion, vehicle exterior head lamp assemblies are fogged with a light layer of condensation on the inside of the lenses. "
S2323000004 REV.A2025-02-14. Service bulletin. ELECTRICAL SYSTEM; STRUCTURE:BODY. Defogger Is Not Working. Terminal Detached From The Glass.
90039802025-01-29. Service bulletin. ELECTRICAL SYSTEM. SWITCH Headlamp Before replacing the Headlamp Switch for faulty dimmer operation. Please follow the next steps to corroborate if the Headlamp Switch is malfunctioning: 1.- Please disconnect and reconnect the headlamp Switch. And verify if the issue is corrected. 2.- Review the internal resistance of the switch: a.- For the Right Dimmer (IP) between Pins 6 & 3. The value should be around 5.74 KOhms, when in the lowest position to 311 ohms in the top position (Parade Detent). b.- For the left Dimmer (Ambient Light) between pins 8 & 3. The value should be around 14.52 KOhms, when in the lowest position to 182 ohms in the top position. If a problem is found in the resistor values. Please replace the Switch.
S1408000384 REV.H2025-01-28. Service bulletin. ELECTRICAL SYSTEM. Start Stop Charging Warning Lamp Illuminated On, Intelligent Battery Sensor (IBS) State of Charge (SOC) Inaccurate, Battery Charging Message, Presence of IBS Related Diagnostic Trouble Codes (DTCs), or Battery Warning Lamp On
S1408000384 REV.G2025-01-09. Service bulletin. ELECTRICAL SYSTEM. Start Stop Charging Warning Lamp Illuminated On, Intelligent Battery Sensor (IBS) State of Charge (SOC) Inaccurate, Battery Charging Message, Presence of IBS related Diagnostic Trouble Codes (DTCs), or Battery Warning Lamp On
S24080001302025-01-03. Service bulletin. WHEELS; ELECTRICAL SYSTEM. Changing Tires to a Larger Size Triggers a Park Assist Module (PAM/PTS) to Set Diagnostic Trouble Code (DTC) B222A Vehicle Line Mismatch

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