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▷ On bumpy road surfaces such as gravel
roads.
▷ On slippery ground.
▷ On steep uphill or downhill grades.
▷ With accumulations of leaves/snow in the
parking space.
▷ With a mounted emergency wheel.
▷ In case of changes to an already-measured
parking space.
▷ With ditches or edges, for instance an edge
of a port.
Limits of ultrasonic measurement
The detection of objects with ultrasonic meas‐
urements can run into physical limits, e.g., in the
following situations:
▷ For small children and animals.
▷ For persons with certain clothing, for instance
coats.
▷ With external interference of the ultrasound,
for instance from passing vehicles or loud
machines.
▷ When sensors are dirty, iced over, damaged
or out of position.
▷ Under certain weather conditions, e.g., high
relative humidity, wet conditions, snowfall,
cold, extreme heat, or strong wind.
▷ With tow bars and trailer couplings of other
vehicles.
▷ With thin or wedge-shaped objects.
▷ With moving objects.
▷ With elevated, protruding objects such as
ledges.
▷ With objects with corners, edges, and
smooth surfaces.
▷ With objects with a fine surface structure
such as fences.
▷ For objects with porous surfaces.
▷ With small and low objects, for instance
boxes.
▷ With obstacles and persons at the edge of
the lane.
▷ With soft obstacles or obstacles covered in
foam material.
▷ With plants and bushes.
▷ Low objects already displayed, for instance
curbs, can move into the blind area of the
sensors before or after a continuous tone
sounds.
▷ Cargo that extends beyond the perimeter of
the vehicle is not taken into account by the
system.
Parking spaces that are not suitable may be de‐
tected or suitable parking spaces may not be de‐
tected at all.
Malfunction
A Check Control message is displayed.
The parking assistant failed. Have the system
checked by a dealer's service center or another
qualified service center or repair shop.
Cross traffic warning
Concept
At blind driveways or when driving out of diago‐
nal parking spaces, approaching cross traffic is
detected sooner by the system than is possible
from the driver's seat.
General information
Two radar sensors in the rear bumper monitor
the area behind the vehicle.
Seite 268
CONTROLS
Driver assistance systems
268
Online Edition for Part no. 01402913686 - X/19
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