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

See also:
System limits
Sudden tire damage
Sudden serious tire damage caused by
external influences cannot be indicated in advance.
A natural, even pressure loss in all four tires cannot
be detected. Therefore, check ...
Actions in the event of a flat tire
Run-flat tires
You can continue driving with a damaged tire at
speeds up to 50 mph/80 km/h.
Do not continue driving without run-flat
tires
If the vehicle is not equipped with run-flat tires
...
Notes on Emergency Requests
Do not use the voice activation system to initiate
an Emergency Request. In stressful situations,
the voice and vocal pitch can change. This can
unnecessarily delay the establishment of a teleph ...
