The concept
The parking brake is primarily intended to prevent the vehicle from rolling while parked; it brakes the rear wheels.

See also:
Arming and disarming the alarmsystem
General information
When you lock or unlock the vehicle, either with
the remote control, Comfort Access or at the
door lock the alarm system is armed or disarmed
at the same time.
Door lock and a ...
Loss of the remote controls
Lost remote controls can be blocked by your
service center. ...
Calling up settings
Do not retrieve the memory while driving
Do not retrieve the memory setting while
driving, as an unexpected movement of the seat
or steering wheel could result in an accident.
Comfort function
...
