Technical Service Bulletin B840525 — 2025 BMW 430I
ELECTRICAL SYSTEM
Bulletin Details
| TSB ID | B840525 |
| Manufacturer | |
| Vehicle | 2025 BMW 430I |
| Component | ELECTRICAL SYSTEM |
| Communication Date |
Bulletin Summary
SITUATION After the telematics module (TCB4) has been replaced, the replacement part control unit is not accepted byISTA.
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.