Mercedes-Benz GLC Owner's Manual page 258

The sensors may not detect snow and
objects which absorb ultrasonic sources.
Ultrasonic sources, such as an automatic
car wash, a lorry's compressed-air brakes
or a pneumatic drill, could cause
PARKTRONIC to malfunction.
PARKTRONIC may not function correctly on
uneven terrain.
! Fold in the ball coupling if the trailer tow
hitch is not required. PARKTRONIC meas-
ures the minimum detection range to an
obstacle from the bumper, not the ball cou-
pling.
PARKTRONIC is activated automatically when
you:
switch on the ignition
R
shift the transmission to position D, R or N
R
PARKTRONIC is deactivated at speeds above
18 km/h. It is reactivated at lower speeds.
PARKTRONIC is deactivated for the rear area
when you establish an electrical connection
between your vehicle and a trailer.
Range of the sensors
General notes
PARKTRONIC does not take into account
obstacles located:
below the detection range, e.g. persons,
R
animals or objects
above the detection range, e.g. overhang-
R
ing loads, tail sections or loading ramps of
goods vehicles
Example: sensors in the front bumper,
:
left-hand side
The sensors must be free of dirt, ice and
slush. Otherwise, they may not function cor-
rectly. Clean the sensors regularly, taking
care not to scratch or damage them
( page 425).
Y
Front sensors
Centre Approx. 100 cm
Corners Approx. 60 cm
Driving systems
255
Z