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

See also:
Servotronic
The conceptThe Servotronic varies the steering force required to turn the wheels relative
to the vehicle speed.
At low speeds, the steering force is strongly assisted, i.e. less force is needed
f ...
In the Cabin
Because each was equipped with the optional Sport Package, both of our test
cars had "multi-contoured" power sport seats, which we found comfortable. An
additional seat adjustment, which ...
Vehicle equipment
All standard, country-specific and optional
equipment that is offered in the model series is
described in this chapter. Therefore, equipment
is also described that is not available in a vehicle, ...
