This Service Information bulletin supersedes SI B12 15 14 dated August 2014
BMW technical service bulletin B121514 for 2011-2013 BMW 135I and 2011 BMW 135I US.
- Bulletin number
- B121514
- Component
- Power train
- Summary
- This Service Information bulletin supersedes SI B12 15 14 dated August 2014. designates changes to this revision SUBJECT N55 with Double-Clutch Transmission: Idle Fluctuates when Stopped. A customer may complain that after coming to a stop, the engine speed intermittently fluctuates from about 500 RPM to 1,100 RPM. This situation can be more noticeable when the air conditioner is on. CAUSE DME software (idle control adaptation).
Owners of these vehicles have filed 14 complaints in the transmission category.
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