Mercedes-Benz GL450 Operator's Manual page 293

Controls in detail
Driving systems
Switching the rear view camera on and
off
Switch on the ignition ( page 42).
Shift the automatic transmission in
position R ( page 190).
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.
Shift the automatic transmission
into P, N or D to switch off the rear
view camera.
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