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

See also:
Performance
What sets the 5 Series wagon apart from the A6 and E-Class is the way it
drives. Sure, its looks scream BMW inside and out, but so does the sweetly
smooth acceleration coming from the twin-turbo s ...
Protective action
Airbags are not triggered in every impact situation,
e.g., in less severe accidents or rear-end
collisions.
Information on how to ensure
the optimal
protective effect of the airbags
▷ ...
Requirements
▷ Equipment version with full preparation
package mobile phone.
An Emergency Request can be made, even
if no mobile phones are paired with the vehicle.
▷ BMW Assist is activated.
...
