Technical Service Bulletin B640821 — 2019 BMW 640I
ELECTRICAL SYSTEM
Bulletin Details
| TSB ID | B640821 |
| Manufacturer | |
| Vehicle | 2019 BMW 640I |
| Component | ELECTRICAL SYSTEM |
| Communication Date |
Bulletin Summary
The air conditioning cycles from cold to warm air while driving or while at a stand still. The vent outlet temperatures vary by 25 degrees Fahrenheit or more (38F to 60F +) without changing any climate control settings. In some cases the air conditioning may have stopped blowing cold air altogether.
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.
Other TSBs for the 2019 BMW 640I
SIB010921
EQUIPMENT