BMW X3 2011–2017 — technical service bulletin
Bulletin B540617 · NHTSA communication 10136729 · issued Nov 1, 2017
Technical service bulletin
communication type
Structure
component
2011–2017
model years
7
vehicle entries
Official summary
WATER LEAK NEAR ROOF FUNCTION CENTER (FZD): Dampness is noticed on the roof liner near the Roof Function Center and/or the hands free microphone.
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.