Check pump for backrest width adjustment
BMW technical service bulletin B520217 for 2015-2017 BMW M3 and 2015-2017 BMW M4.
- Bulletin number
- B520217
- Component
- Seats
- Summary
- SERVICE ACTION: CHECK PUMP FOR BACKREST WIDTH ADJUSTMENT: The backrest width adjustment and, the lumbar support adjustment of the front seats are accomplished by a common air pump.
Owners of these vehicles have filed 1 complaints in the seats category.
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