Bmw: due to transmission oil heat exchanger's faulty thermostat or engine faulty characteristic map...
BMW technical service bulletin SIB-12-33-14 for 2013-2015 BMW X3, 2012-2013 BMW 3 Series and 2015 BMW X4.
- Bulletin number
- SIB-12-33-14
- Component
- Engine and engine cooling: cooling system
- Summary
- Bmw: due to transmission oil heat exchanger's faulty thermostat or engine faulty characteristic map thermostat, engine coolant fails to reach operating temperature, with low heat output and service engine soon light comes on. No model years listed.
Owners of these vehicles have filed 258 complaints in the engine category.
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