BMW 530I 2023–2024 — technical service bulletin
Bulletin B640524 · NHTSA communication 10252133 · issued Mar 27, 2024
Technical service bulletin
communication type
Electrical System
component
2023–2024
model years
9
vehicle entries
Official summary
When the interior temperature of the vehicle is between 5 F (-15 C) and 23 F (-5 ), the defroster function is limited; and the interior doesnà ¢à  à  t heat up quickly enough.
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.