Selecting a main function
Initial situation
You would like to change from the telephone menu to the vehicle settings, for example.
Slide 
the COMAND controller
and
switch to the main function bar.
Select Vehicle in the main function bar by
turning 
the COMAND controller and
press 
to confirm.
The "Vehicle" menu appears.
1 "Vehicle" menu
2 Display/selection window
See also:
Fuse box in the engine compartment
► Open the hood.
Illustrated: GL 450 (GL 350 BlueTEC, GL 550 are
similar)
► Remove any existing moisture from the
fuse box using a dry cloth.
► To open: open clamps 2.
` ...
Useful information
This Operator's Manual describes all
models and all standard and optional
equipment of your vehicle available at the
time of publication of the Operator's
Manual. Country-specific differences are ...
Problems with your vehicle
If you should experience a problem with your
vehicle, particularly one that you believe may
affect its safe operation, we urge you to
contact an authorized Mercedes-Benz Center
immediately to ...