Mercedes-Benz COMAND Operator's Manual page 176

Aux Operation
174
X
Select Rear Audio Off.
Setting the Brightness/Contrast/
Color
X In the AUX menu, select Display Aux or
Drive Aux.
X
Select Brightness, Contrast or Color.
A setting scale appears.
X To adjust setting: Press ∆ or ∇.
X
To confirm setting: Press 9.
Changing the Picture Format
X
In the AUX menu, select Display Aux or
Drive Aux.
The ä icon in front of one of these menu
items: 16:9 optimized, 4:3 or Wide
Screen indicates the currently selected
format.
X To switch formats: Press ∆ or ∇ until the
desired format is selected.
X
To save setting: Press 9.