BMW 740I 2022–2023 — technical service bulletin
Bulletin B520423 · NHTSA communication 10235187 · issued Mar 1, 2023
Technical service bulletin
communication type
Electrical System
component
2022–2023
model years
5
vehicle entries
Official summary
The seat module control unit controls the seat functions. A software error can lead to the loss of the initialization function.
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.