BMW X3 2018 — technical service bulletin
Bulletin B540318 · NHTSA communication 10136346 · issued Mar 1, 2018
Technical service bulletin
communication type
Visibility
component
2018
model years
1
vehicle entries
Official summary
PANORAMIC SUNROOF DOES NOT FUNCTION OR CAUSES NOISE DURING OPERATION: The panoramic sunroof may not be functioning, or may be causing noises during operation from the area of the roof function center (FZD).
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.