BMW X5 2019 — technical service bulletin
Bulletin B170518 · NHTSA communication 10152662 · issued Nov 1, 2018
Technical service bulletin
communication type
Power Train
component
2019
model years
1
vehicle entries
Official summary
SERVICE ACTION: REPLACE TRANSMISSION OIL COOLER AND CHECK TRANSMISSION OIL COOLER LINE. The transmission oil cooler and transmission oil cooler line (radiator feed) could be affected by a manufacturing defect, which may result in transmission fluid leak.
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.