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Service bulletin 640201

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 id619676
Published by NHTSA2001-06-23
Manufacturer's number640201
Manufacturer's date2001-03-01
NHTSA componentEQUIPMENT:APPLIANCE:AIR CONDITIONER

NHTSA's summary

CUSTOMERS WHO ENTER AN UNLOCKED VEHICLE, THEN SET THE A/C TO NEW SETTINGS WHILE DRIVING, FIND THAT AFTER LOCKING AND UNLOCKING THE VEHICLE, THE A/C SETTINGS CHANGE BACK TO A PREVIOUS SETTING ON VEHICLES WITH IHKA. *TT

The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

Components

Equipment and accessories, Heating and air conditioning

Vehicles listed
BMW E39
BMW E53

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