See also:

Vehicle data, GL 550
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. ...

Checking the battery
•► Press the or button. The battery is working properly if battery check lamp 1 lights up briefly If battery check lamp 1 does not light up briefly during the test, the battery is ...

Showing/hiding the menu
This function is not available while the DVD's own menu is being displayed. To show: press the COMAND controller. or Select Menu while the navigation menu is shown and press to confirm. ...