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

See also:
Steptronic
In addition to fully automatic operation, you can also manually shift with the
Steptronic.
Vehicle parking To prevent the vehicle from rolling, always
select position P and apply the parking brak ...
Strength of the driver's and front passenger airbag
The strength with which the driver's and front
passenger airbags are triggered depends on the
position of the driver's and front passenger
seats.
To maintain the accuracy of this function over ...
Low tire pressure message
The yellow warning lamp lights up. A
Check Control message is displayed.
There is a flat tire or a major loss in
tire inflation pressure.
The system was not reset after a wheel
change ...
