BMW X3 2017 — technical service bulletin
Bulletin B310417 · NHTSA communication 10136720 · issued Dec 1, 2017
Technical service bulletin
communication type
Engine and Engine Cooling
component
2017
model years
1
vehicle entries
Official summary
SERVICE ACTION: CHECK, AND IF REQUIRED, REPLACE THE RIGHT FRONT HALF SHAFT: An oil leak may develop at the right front axle output shaft where the shaft enters the output shaft extension housing.
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.