Mercedes-Benz GLC : Vehicles with Parking Assist PARKTRONIC / System failure
If the rear view camera is not operational, the
following display appears in the multimedia system.

The following camera views are available in the
multimedia system:
Normal view
Yellow lanes marking the course
the tires
will take with the current steering angle
(dynamic)
Yellow guide line, vehicle
width (driven surface)
depending on the current steering
angle (dynamic)
Red guide line at a distance of
approximately
1...
The rear view camera will not function or will
only partially function in the following situations:
The tailgate is open.
There is heavy rain, snow or fog...
Other information:
Requirements:
The ignition is switched off.
To activate: press button
for approximately one second.
A visual and audible alarm is triggered.
To deactivate: briefly press button
again.
or
Press the start/stop button on the cockpit, with the SmartKey inside the vehicle...
WARNING Risk of accident because
vehicle level is too high
Driving characteristics may be impaired.
The vehicle can drift outwards, for example,
when steering or cornering.
Choose a vehicle level
which is suited
to the driving style and the road surface
conditions...