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

See also:
Fuel cap
Opening
1. Briefly press the rear edge of the fuel filler
flap.
2. Turn the fuel cap counterclockwise.
3. Place the fuel cap in the bracket attached to
the fuel filler flap.
Closing
1. ...
Configuring the prewarning
After the warning function is switched on, the
following can be set via the iDrive:
The prewarning can be switched on/off.
The time of the prewarning can be set.
These settings have no effe ...
Note
Children in the vehicle
Do not leave children unattended in the
vehicle; otherwise, they could endanger themselves
and other persons, e.g., by opening the
doors. ...
