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Service bulletin B12-07-12

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 id10044020
Published by NHTSA2012-05-08
Manufacturer's numberB12-07-12
Manufacturer's date2012-04-01
NHTSA componentENGINE AND ENGINE COOLING:ENGINE; ENGINE AND ENGINE COOLING:COOLING SYSTEM

NHTSA's summary

BMW: THE ENGINE COULD ENTER THE EMERGENCY PROGRAM OR EXPERIENCE PERFORMANCE AND ROUGH IDLE COMPLAINTS. THE FOLLOWING FAULT MAY ALSO BE STORED: 2AF9: COOLANT TEMPERATURE SENSOR. ALSO INCLUDED MODELS E90, E92, E93 M3 MODEL YEARS ARE UNKNOWN. *JS

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

Engine, Cooling system

Vehicles listed
BMW BMW
BMW M3

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