BMW 320I 2012–2014 — technical service bulletin
Bulletin 512113 · NHTSA communication 10148030 · issued Sep 1, 2014
Technical service bulletin
communication type
Structure
component
2012–2014
model years
16
vehicle entries
Official summary
Door Mirror Wind/Whistle Noise. Whistling noise from front area of the front door mirror when driving at highway speeds CAUSE There is an air gap between the door mirror cap and the turn signal housing in the mirror.
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.