BMW 7 2023 — technical service bulletin
Bulletin B653123 · NHTSA communication 10244502 · issued Oct 27, 2023
Technical service bulletin
communication type
Electrical System
component
2023
model years
5
vehicle entries
Official summary
A vehicle may arrive at your center with various faults and check control messages. During diagnosis with ISTA, these modules do not respond: Receiver Audio Module (RAM) Instrument Cluster Module (KOMBI) Telematics Module (TCB4) Headunit 5 (HU-H5)
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.