Service bulletins for the 2021 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.
445 on file from NHTSA, as of 2026-10-19.
By type
By component
By trouble code
Only bulletins with component: Backup camera are shown. Show all
| 9004375 | 2021-06-28. Service bulletin. BACK OVER PREVENTION. RADIO, MULTI Media (ASSY) The customers may have concerns of backup camera missing gridlines or showing black screen with "check entire surroundings" message while in Reverse mode. It is a backup camera initialization timing issue. Please check the backup camera and connections. This issue is recoverable with a key cycle. Replacing the radio head unit will not resolve the customer's concerns. FOTA service software release is scheduled for later June, 2021. |
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| 18-034-21 | 2021-05-24. Service bulletin. BACK OVER PREVENTION; FUEL SYSTEM, DIESEL; FUEL SYSTEM, GASOLINE. P203E and P203F Additional Diagnostic Information This bulletin provides additional information regarding diagnosing Diesel Exhaust Fluid (DEF) issue in extreme cold weather. Diagnostic Trouble Codes (DTCs) P203E - Reductant Level Sensor 1 Circuit Intermittent and/or P203F - Reductant Level Too Low set. |
| S2108000093 | 2021-05-24. Service bulletin. BACK OVER PREVENTION:DISPLAY FUNCTION; EQUIPMENT. Apple CarPlay Does Not Work Or Not Connecting |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.