Mercedes-Benz 2007 G-Class Operator's Manual page 206

Move the gear selector lever to reverse
gear R ( page 162).
The area behind the vehicle appears in
the COMAND system display.
i
The area behind the vehicle is shown in the
COMAND system display as a mirror image, like
in the rear view mirror.
i
The image from the rear view camera will
no longer be displayed if you select another
function on the COMAND system while reverse
gear R is engaged. To display the image again,
disengage and reengage reverse gear R.
Switching the rear view camera off
Move the gear selector lever to
position P, N or D.
or
Select another function on the
COMAND system.
Controls in detail
Driving systems
205