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

See also:
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.
...
Contacts
...
Starting Roadside Assistance with
BMW Assist or TeleService
General information
In vehicles equipped with TeleService, support
is first offered by TeleService Diagnosis and
then, if necessary, by TeleService Help.
1. "BMW Assist" or "Conne ...
