Technical Service Bulletin B640721 — 2017 BMW 740E
ELECTRICAL SYSTEM
Bulletin Details
| TSB ID | B640721 |
| Manufacturer | |
| Vehicle | 2017 BMW 740E |
| Component | ELECTRICAL SYSTEM |
| Communication Date |
Bulletin Summary
Only warm air comes out of the vents despite the air conditioning being switched on. The status indicator LED on the air conditioning control panel (IHKA) lights up green.
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.