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:
WARNING Risk of injury through exceeding
the specified tire load-bearing capacity
or the permissible speed rating
Exceeding the specified tire load rating or
the permissible speed rating may lead to tire
damage and to the tires bursting.
Therefore, only use tire
types and sizes
approved for your vehicle model...
If you do not use the vehicle or a SmartKey for
an extended period of time, you can reduce the
energy consumption of the respective SmartKey.
To do so, deactivate the SmartKey functions.
To deactivate: press the
button on the SmartKey twice in quick succession...