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 due to modifications
to the child restraint system
The child restraint system can no longer
function properly. This poses an increased
risk of injury.
Never modify a child restraint system.
Only affix accessories which have been specially approved for this child restraint system by the child restraint system's manufacturer...
NOTE Plug-in hybrid
Observe the notes in the Supplement. You could otherwise fail to recognize dangers.
Mercedes-Benz AG cannot, despite carefully
developing vehicle systems, completely rule out
the interaction of vehicle systems with electronic
medical aids such as cardiac pacemakers...