Start/Stop button

Start/Stop button
Pressing the Start/Stop button switches the ignition on or off and starts the engine.
The engine starts if the brake pedal is pressed when you press the Start/Stop button.
See also:
Adaptive brake assistant
In combination with the Active Cruise Control,
this system ensures that the brakes respond
even more rapidly when braking in critical situations.
Refer also to Collision warning. ...
BMW X3 iDrive Owners Manual
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Malfunction
In the event of a failure or malfunction of the
parking brake, secure the vehicle against rolling
using a wheel chock, for example, when leaving
it. ...
