Technical Service Bulletin B540421 — 2021 BMW X5
VISIBILITY:SUN/MOON ROOF ASSEMBLY
Bulletin Details
| TSB ID | B540421 |
| Manufacturer | |
| Vehicle | 2021 BMW X5 |
| Component | VISIBILITY:SUN/MOON ROOF ASSEMBLY |
| Communication Date |
Bulletin Summary
The front sunroof glass seal has shrunk, creating a gap which can cause wind noise or excess water entry.
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.