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

See also:
The concept
The following can be operated using the buttons
and the thumbwheel on the steering wheel:
Current audio source.
Redial on telephone*.
Activation of the voice activation system*.
...
Changing wheels and tires
Mounting
Information on mounting tires
Have mounting and balancing performed
only by a service center or tire specialist.
If this work is not carried out properly, there is
the danger of subse ...
Before mounting
If the rear seat backrests are adjustable:
Before mounting child restraint fixing systems,
return all of the rear seat backrests to the basic
position. ...
