Technical Service Bulletin B640724 — 2023 BMW IX
ENGINE
Bulletin Details
| TSB ID | B640724 |
| Manufacturer | |
| Vehicle | 2023 BMW IX |
| Component | ENGINE |
| Communication Date |
Bulletin Summary
Quality checks have determined that the coolant changeover valve may develop a coolant leak under ver ylow outside temperatures (significantly lower than 32º F (0 C)).
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.