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Service bulletin B650121

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id11002864
Published by NHTSA2024-07-02
Manufacturer's numberB650121
Manufacturer's date2024-06-12
NHTSA componentUNKNOWN OR OTHER

NHTSA's summary

No Bass or a cracking noise can be heard from the bass speakers.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Vehicles listed
BMW 228I2023
BMW 330I2023
BMW 4 SERIES2023
BMW 5 SERIES2023
BMW 740I2024
BMW 840I2024
BMW X32024
BMW X42023
BMW X52024
BMW X62024
BMW X72023
BMW Z42023

Listing a model year does not mean every vehicle of it is concerned: the document says which.