See also:

Secondary control
For mechanically locking and unlocking the doors in the event of a fault with the central locking system or a battery failure. ...

A few definitions
Range (miles or km) This indicates the distance which can still be travelled with the fuel remaining in the tank in relation to the average fuel consumption over the last few miles (kilometres) ...

Trip recorder zero reset
With the trip mileage displayed, press the button for a few seconds. ...