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

See also:
Pairing and connecting cell phone
Pairing the mobile phone
To avoid becoming distracted and posing
an unnecessary hazard both to your own vehicle's
occupants and to other road users, only
pair the mobile phone while the vehicl ...
Switch off any functions thatare not currently needed
Functions such as seat heating and the rear window
defroster require a lot of energy and consume
additional fuel, especially in city and stopand-
go traffic.
Therefore, switch off these function ...
Deactivating/activating DTC Dynamic Traction Control
Activating the Dynamic Traction Control DTC
provides maximum traction on loose ground.
Driving stability is limited during acceleration
and when driving in bends.
Activating DTC
Activating DT ...
