Technical Service Bulletin B640321 — 2021 BMW X3
STRUCTURE:INTERIOR PANELS:DASHBOARD
Bulletin Details
| TSB ID | B640321 |
| Manufacturer | |
| Vehicle | 2021 BMW X3 |
| Component | STRUCTURE:INTERIOR PANELS:DASHBOARD |
| Communication Date |
Bulletin Summary
After replacing the microfilter during a previous service, the customer notices that the ventilation system airflow rate is noticeably less. This leads to perceived lower cooling power. The customer may also notice that external odors enter the vehicle.
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.