BMW 328I 2014–2016 — technical service bulletin
Bulletin B510616 · NHTSA communication 10151103 · issued Feb 1, 2016
Technical service bulletin
communication type
Visibility
component
2014–2016
model years
6
vehicle entries
Official summary
SUBJECT Whistling Noise from the B-pillar. A whistling noise can be heard from the left or right side B-pillar area when the sunroof is open or tilted at highway speeds. Edge protection on the B-pillar
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.