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Service bulletin B640403

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 id10145347
Published by NHTSA2018-10-09
Manufacturer's numberB640403
Manufacturer's date2018-07-01
NHTSA componentEQUIPMENT:APPLIANCE:AIR CONDITIONER

NHTSA's summary

AIR CONDITIONING SYSTEM HAS A MUSTY ODOR: A musty odor is noticed coming from the heating and air conditioning system.

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.

Components

Equipment and accessories, Heating and air conditioning

Vehicles listed
BMW BMW

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