Technical Service Bulletin B652219 — 2018 BMW 540D
EQUIPMENT ADAPTIVE/MOBILITY
Bulletin Details
| TSB ID | B652219 |
| Manufacturer | |
| Vehicle | 2018 BMW 540D |
| Component | EQUIPMENT ADAPTIVE/MOBILITY |
| Communication Date |
Bulletin Summary
NO AUDIO IS AVAILABLE FOR APPROXIMATELY 30 SECONDS AFTER HEAD UNIT START UP: After programming vehicle no audio is available for approximately 30 seconds after head unit start-up. Fault code B7F490 "Control unit reset" is present in the RAM (Receiver Audio Module).
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.