Service bulletins for the 2021 BMW M4
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.
72 on file from NHTSA, as of 2026-10-19.
By type
By component
Only bulletins with component: Lighting are shown. Show all
| B630821 | 2023-07-24. Service bulletin. EXTERIOR LIGHTING; ELECTRICAL SYSTEM. Headlight check control (CC) message 128 "High beam headlight failure" is displayed. The following fault codes are stored during a vehicle test: 80419A - Left high-beam headlight: Short circuit and/or 8041A5 - light outputs: Number of permitted short circuit cycles exceeded |
|---|---|
| B630321 | 2023-07-24. Service bulletin. EXTERIOR LIGHTING:TAIL LIGHTS. Condensation is present on the inner surfaces in one or both taillights (circled). |
| SIB630222 | 2022-07-05. Service bulletin. EXTERIOR LIGHTING:HEADLIGHTS. Excessive condensation has collected in one or both headlights. |
| B630321 | 2021-03-15. Service bulletin. EXTERIOR LIGHTING. CONDENSATION IN TAILLIGHT: Condensation is present on the inner surfaces in one or both taillights |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.