Technical Service Bulletin B520325 — 2025 BMW 330I
ELECTRICAL SYSTEM
Bulletin Details
| TSB ID | B520325 |
| Manufacturer | |
| Vehicle | 2025 BMW 330I |
| Component | ELECTRICAL SYSTEM |
| Communication Date |
Bulletin Summary
The driver’s seat heater doesn’t work after the installation of a replacement seat harness part number (P/N)52 10 7 414 701.
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.