See also:

Notes
Use while driving If on a rare occasion it is necessary to use the parking brake while driving, do not use excessive force when applying it. When using it, keep the button on the lever dep ...

Switching off automatically
System switches off: above approx. 9 mph/ 15 km/h. Switch on the system again if necessary. ...

Remove attached parts following use
Remove auxiliary mirrors, roof or rear luggage racks which are no longer required following use. Attached parts on the vehicle impair the aerodynamics and increase the fuel consumption. ...