BMW X5 2011–2014 — technical service bulletin
Bulletin SI B11 05 16 · NHTSA communication 10076475 · issued Apr 1, 2016
Technical service bulletin
communication type
Engine
component
2011–2014
model years
8
vehicle entries
Official summary
Service Action: S63 Engine Replace Crankcase Vent Connecting Line The crankcase ventilation connection line may deteriorate prematurely causing any of the following: vacuum leak various fault codes related to mixture control stored in the DME customer complaints about rough idle speed Check Engine Light illumination.
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.