BMW X3 2011–2017 — technical service bulletin
Bulletin B541219 · NHTSA communication 10166384 · issued Sep 1, 2019
Technical service bulletin
communication type
Equipment
component
2011–2017
model years
7
vehicle entries
Official summary
RATTLE NOISE FROM SUNROOF AREA: There is a rattle noise present from the area of the sunroof most commonly when driving over rough road surfaces.
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.