See also:

Using the door lock
General information Locking from the outside Do not lock the vehicle from the outside if there are people in it, as the vehicle cannot be unlocked from inside without special knowledge.◄ ...

Settings
Vehicle Equipment ...

Fuel cap
Opening 1. Briefly press the rear edge of the fuel filler flap. 2. Turn the fuel cap counterclockwise. 3. Place the fuel cap in the bracket attached to the fuel filler flap. Closing 1. ...