BMW X5 2015–2018 — technical service bulletin
Bulletin B330315 · NHTSA communication 10136341 · issued Mar 1, 2018
Technical service bulletin
communication type
Equipment
component
2015–2018
model years
8
vehicle entries
Official summary
LEAKING REAR DIFFERENTIAL (QMVH): There is an oil leak from the rear differential 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.