See also:

Hazard warning flashers
The button is located in the center console. ...

Operating from the outside
▷ Via the remote control. ▷ Via the door lock. ▷ In cars with Comfort Access, via the door handles. The following takes place simultaneously when locking/unlocking the vehicle ...

Malfunction
In the event of a failure or malfunction of the parking brake, secure the vehicle against rolling using a wheel chock, for example, when leaving it. ...