BMW X3 2018–2019 — technical service bulletin
Bulletin B540718 · NHTSA communication 10152671 · issued Nov 1, 2018
Technical service bulletin
communication type
Visibility
component
2018–2019
model years
2
vehicle entries
Official summary
PANORAMIC SUNROOF DOES NOT OPEN OR CLOSE. The panoramic sunroof will not open or close. There are no faults stored for the panoramic sunroof. A software error in 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.