Bmw: diagnosis of dme me 9.2 map thermostat fault 2EF4/279B. the service engine soon light illuminated....
BMW technical service bulletin SIB-12-15-05 for 1994-2005 BMW 7 Series and 1990-2005 BMW 6 Series.
- Bulletin number
- SIB-12-15-05
- Component
- Engine and engine cooling: engine
- Summary
- Bmw: diagnosis of dme me 9.2 map thermostat fault 2ef4/279b. The service engine soon light illuminated. The engine does not overheat and the map thermostat operates properly. Possible causes are deterioration of coolant quality; increased contact resistance between the thermostat temperature sensor, the engine wiring harness and the dme connector; internal defect of a map cooling thermostat.
Owners of these vehicles have filed 7 complaints in the engine category.
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