Centrally locking and unlocking the vehicle from the inside
To unlock:
press button 
. To lock:
press button 
. The red indicator lamp on button lights up once the vehicle is locked.
This does not lock or unlock the fuel filler flap.
The socket flap is also locked and unlocked. The socket flap can be opened even if a key is detected in the car.
The vehicle is not unlocked:
If you have locked the vehicle using the key.
If you have locked the vehicle using KEYLESS-GO.