Technical Service Bulletin B340415 — 2014 BMW 525D XDRIVE
SERVICE BRAKES
Bulletin Details
| TSB ID | B340415 |
| Manufacturer | |
| Vehicle | 2014 BMW 525D XDRIVE |
| Component | SERVICE BRAKES |
| Communication Date |
Bulletin Summary
After Cold Start, Brake Booster Reservoir Vacuum Reduced. With an outside temperature below 14ºF, brake booster vacuum may be reduced after a cold start. The non-return valve in the vacuum line to the brake booster may stick at temperatures below 14ºF. Sufficient vacuum supply is available again at the brake booster only after the vehicle is driven (approximately 1/4 mile).
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.