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

See also:
Diesel particulate filter
Soot particles are collected in the diesel particulate
filter and periodically burned away at high
temperatures.
During the cleaning period of several minutes:
▷ The engine may temporarily ...
Maintaining/storing the speed
Press the button.
or:
Press the rocker switch while the system is interrupted.
When the system is switched on, the current
speed is maintained and stored as the desired
speed.
It is d ...
Radio
FM
AM
Satellite radio
Stored stations
...
