BMW 330E 2019–2022 — technical service bulletin
Bulletin B640521 · NHTSA communication 10212798 · issued Apr 1, 2022
Technical service bulletin
communication type
Structure
component
2019–2022
model years
9
vehicle entries
Official summary
A rattling noise is heard in the vehicle interior when the air conditioning (AC) is activated.
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.