BMW 330E 2019–2021 — technical service bulletin
Bulletin B512520 · NHTSA communication 10182912 · issued Oct 1, 2020
Technical service bulletin
communication type
Structure
component
2019–2021
model years
6
vehicle entries
Official summary
WHISTLE NOISE FROM FRONT DOORS WHILE DRIVING: There is a whistling noise present from either front door while driving at speeds of 60 mph. This can occur on one or both front doors. Foam acoustic seals at the A-Pillar and B-Pillar may have shrunk or shifted, causing an air leak.
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.