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

See also:
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, ...
Daytime running lights
With the ignition switched on, the daytime running
lights light up in position 0, or
.
After the ignition is switched off, the parking
lamps light up in position .
Activating/deactivating
1. ...
Actions in the event of a flat tire
Run-flat tires
You can continue driving with a damaged tire at
speeds up to 50 mph/80 km/h.
Do not continue driving without run-flat
tires
If the vehicle is not equipped with run-flat tires
...
