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

See also:
Unlocking and opening
► Either unlock the doors together using the
button for the central locking system and
then pull the door handle above the armrest
or
► Pull the door opener twice individually on
each ...
Sitting safely
The ideal seating position can make a vital contribution
to relaxed, fatigue-free driving.
The seating position plays an important role in
an accident in combination with:
▷ Safety belts.
...
Massage function in rear seats
Wavelike motions from the top to the bottom in
the backrest relax back muscles.
Button in rear
Switching on
To switch on, press the button
once for
each massage level.
The highest level i ...
