Service bulletins for the 2021 BMW 540i
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.
167 on file from NHTSA, as of 2026-10-19.
By type
By component
Only bulletins with component: Suspension are shown. Show all
| B651720 | 2020-12-21. Service bulletin. SUSPENSION; EQUIPMENT:APPLIANCE:TV/RADIO/SPEAKERS. SERVICE ACTION - INSTALL GROUND STRAP / SUPPRESSOR BELT: Corrosion developing on the rear suspension contact points can lead to poor radio reception over a certain duration of time. |
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The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.