BMW X5 2019–2022 — technical service bulletin
Bulletin B640722 · NHTSA communication 10228438 · issued Nov 1, 2022
Technical service bulletin
communication type
Structure
component
2019–2022
model years
8
vehicle entries
Official summary
Customer states that they always hear a whistle (air noise) coming from the rear B pillar vent(s) when the vent is in the closed position. When the vent(s) are fully open, or the air output is set to the footwell position then the noise goes away.
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.