Technical Service Bulletin B610121 — 2018 BMW 540I
ELECTRICAL SYSTEM
Bulletin Details
| TSB ID | B610121 |
| Manufacturer | |
| Vehicle | 2018 BMW 540I |
| Component | ELECTRICAL SYSTEM |
| Communication Date |
Bulletin Summary
VOLT BATTERY MAINTENANCE: 48 V battery may become totally discharged, and possible replacement needed if: a) The vehicle has been charged using a 12 V charger with the hood closed during a long stationary period.
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.