N55: Idle Fluctuates Briefly After a Cold Engine Start
BMW technical service bulletin 120412 for 2011-2013 BMW X5, 2011-2013 BMW X3 and 2011-2014 BMW 535I and others.
- Bulletin number
- 120412
- Component
- Engine
- Summary
- N55: Idle Fluctuates Briefly After a Cold Engine Start. Under certain engine cold starts, the engine idle may fluctuate during the first 10-20 seconds of operation before becoming stable. No faults will be stored in this situation, which will usually only occur at specific engine temperatures, making it difficult to reproduce in the workshop. Unfavorable DME software calibration
Owners of these vehicles have filed 625 complaints in the engine category.
Vehicles covered
VIN decoder
See the problems and recalls for an exact car
Buying a used BMW X5?
Check the exact car before you pay: accidents, salvage or flood titles, odometer readings and previous owners.
Check its history