BMW 640I 2012–2014 — technical service bulletin
Bulletin 511113 · NHTSA communication 10150073 · issued Jun 1, 2013
Technical service bulletin
communication type
Visibility
component
2012–2014
model years
8
vehicle entries
Official summary
Rattling Noise from Windshield Defroster Vents. Rattling noises can be heard from the instrument panel where the defroster vents are located.
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.