BMW X3 2018–2021 — technical service bulletin
Bulletin B541119 · NHTSA communication 10206684 · issued Dec 1, 2021
Technical service bulletin
communication type
Equipment
component
2018–2021
model years
13
vehicle entries
Official summary
This bulletin outlines known areas of possible water entry, operational noise, or wind noise for the vehicles listed above. It serves only as a diagnostic resource in troubleshooting complaints from the roof area.
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.