BMW X5 2015–2016 — technical service bulletin
Bulletin B130715 · NHTSA communication 10147239 · issued Sep 1, 2015
Technical service bulletin
communication type
Electrical System
component
2015–2016
model years
2
vehicle entries
Official summary
"N57T - Automatic Start/Stop (MSA) Does Not Function. The MSA feature to shut the engine off does not function at any time, although it is set to active. The MSA test plan indicates that the ""engine stop"" inhibitor is currently active due to missing steering angle information. There are no relevant faults stored and the steering angle is calibrated correctly. CAUSE A communication error between the engine (DDE) and electronic steering (EPS) control units."
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.