See also:

Activating the rear view camera
Make sure that the SmartKey is in position 2 in the ignition lock. Engage reverse gear. The area behind the vehicle is shown in the COMAND display with guide lines. ...

Hiding a service message
  Press the or button on the steering wheel. ...

Vehicle data, GL 350 BlueTEC
The data stated here refers specifically to a vehicle with standard equipment. Consult an authorized Mercedes-Benz Center for the data for all vehicle variants and trim levels. ...