BMW X5 2016–2018 — technical service bulletin
Bulletin B121018 · NHTSA communication 10138377 · issued Apr 1, 2018
Technical service bulletin
communication type
Engine and Engine Cooling
component
2016–2018
model years
3
vehicle entries
Official summary
MALFUNCTION INDICATOR LAMP (MIL): IHKA FC 801386: After program the vehicle with I-Level F025-17-11-500 or higher; the Malfunction Indicator Lamp (MIL) illuminates while driving.
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.