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 accident due to insufficient
or excessive tire pressure
Tires with either too low or too high a pressure
present the following hazards:
the tires could burst
the tires could wear excessively and/or unevenly
the driving characteristics as well as steering and braking
characteristics may be severely impaired
Observe the recommended
tire pressures
and check the tire pressure of all
tires including the spare wheel:
monthly
if altering the load on the vehicle
prior to long journeys
if the operating conditions change, for
example when driving off-road
Adjust the tire pressure
where necessary...
Also observe the following information when
fording:
Vehicles with AIR BODY CONTROL: select
the highest possible vehicle level
Drive no faster than 6 mph (10 km/h).
Observe the maximum permissible fording
depth.
Switch off automatic climate control...