BMW X5 2014–2015 — technical service bulletin
Bulletin B121715 · NHTSA communication 10152304 · issued Apr 1, 2015
Technical service bulletin
communication type
Engine and Engine Cooling
component
2014–2015
model years
2
vehicle entries
Official summary
Service Action: Program Control Units (DME). If the vehicle is driven with long engine idle phases followed by full throttle accelerations, engine (spark) knocking could occur and result in internal engine damage.
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.