Service bulletins for the 2021 BMW 330i
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.
202 on file from NHTSA, as of 2026-10-19.
By type
By component
Only bulletins with component: Cooling system are shown. Show all
| SIB640521 | 2022-08-22. Service bulletin. EQUIPMENT; ENGINE AND ENGINE COOLING:COOLING SYSTEM; ENGINE AND ENGINE COOLING:COOLING SYSTEM:HOSES/LINES/PIPING/FITTINGS. A rattling/droning noise is heard in the vehicle interior when the air conditioning (AC) is activated. Vibrations are felt in the driver's footwell. |
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The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.