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

See also:
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.◀ ...
Driving through water
Maximum water depth:
▷ BMW X5: 20 inches/50 cm.
▷ BMW X6: 17 inches/45 cm.
Adhere to water depth and speed limitations
Only drive through water up to the above-mentioned
depth at n ...
Sound output
Switching on/off
When the ignition is switched off: press ON/OFF
button on the radio.
Muting
When the ignition is switched on or the engine
is running: press the ON/OFF button on the
radio. ...
