Brake vacuum sensor
WARNING: This page is about a different car, the 2013 BMW X5, 2012 BMW X5, and 2011 BMW X5. However, it is still accessible from the selected car via links, so may be relevant.
The brake booster is equipped with a vacuum sensor to help ensure that adequate brake-application force will remain available under all conditions. The brake vacuum sensor is located next to the brake booster, to which it is connected by a separate line.
| Item | Explanation |
|---|---|
| 1 | Brake vacuum sensor |
| 2 | Plug connection |
IMPORTANT:
The MSA will respond to inadequate brake vacuum by starting the engine without any action of any kind on the part of the driver. Low brake vacuum can lead to safety risks during braking maneuvers: for instance, when starting on a slope. The engine restarts to rectify this condition.