BMW X1 2023 — technical service bulletin
Bulletin B540223 · NHTSA communication 10243936 · issued Oct 6, 2023
Technical service bulletin
communication type
Visibility
component
2023
model years
1
vehicle entries
Official summary
Water ingress from the panoramic sunroof (aka moonroof), either on the front driverâ  s and/or passengerâ  s side.
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.