Technical Service Bulletin B520125 — 2023 BMW 740I
ELECTRICAL SYSTEM
Bulletin Details
| TSB ID | B520125 |
| Manufacturer | |
| Vehicle | 2023 BMW 740I |
| Component | ELECTRICAL SYSTEM |
| Communication Date |
Bulletin Summary
The customer sees various check control warnings of 'Drive Fault', along with windows, doors, and seatsthat do not function. There may be restraint system check control warnings. The entire K-CAN9 / Body3 CAN bus may not communicate. Various fault memory entries for the above-mentioned components may be stored: 930D86 - Function restraint system driver restricted. 930D87 - Function front passenger restraint system restricted. C9544D, C9544F - Message Missing C95452, C95454 - Signal invalid 035BF4, 035BFB, 035BFC, 035BFD - Communication via Body3_CAN corrupt. CD052C, E3852C, E4852C, E3452C, E4452C, DF852C, DFC52C, DDC52C, DF452C, E6052C, E5852C- BODY3-CAN Control Module Bus OFF 802A00, 802E00, 802C00, 803000 - Functions seat heating not available 803003, 802C03, 802E03, 802A03 - Functions seat adjustment limited
About Technical Service Bulletins
A Technical Service Bulletin (TSB) is a document issued by a vehicle manufacturer to its dealers, describing a known issue with a specific vehicle or set of vehicles and the recommended procedure to fix it. Unlike recalls, TSBs are not mandatory and are typically only performed if an owner reports the related issue. However, TSBs can be an indicator of common problems with a vehicle.
Other TSBs for the 2023 BMW 740I
B611724
ELECTRICAL SYSTEM
B651324
UNKNOWN OR OTHER
B511723
STRUCTURE
B512122
STRUCTURE:BODY:ROOF AND PILLARS
B120323
EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
B651323
ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL
SIB350123
SERVICE BRAKES
SIB630523
AIR BAGS
SIB640423
VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM
B630323
INTERIOR LIGHTING