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Functional limitations
The system may not be fully functional in the
following situations:
▷ 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.
Limits of ultrasonic measurement
Ultrasonic measuring might not function under
the following circumstances:
▷ For small children and animals.
▷ For persons with certain clothing, e.g.
coats.
▷ With external interference of the ultra‐
sound, e.g. from passing vehicles or loud
machines.
▷ When sensors are dirty, iced over, dam‐
aged or out of position.
▷ Under certain weather conditions such as
high relative humidity, rain, snowfall, ex‐
treme 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 or cargo.
▷ With objects with corners and sharp edges.
▷ With objects with a fine surface structure
such as fences.
▷ For objects with porous surfaces.
Low objects already displayed, e.g., 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.
It can happen that parking spaces are detected
that are not suitable or suitable parking spaces
are not detected.
Malfunction
A Check Control message is displayed.
The parking assistant failed. Have the system
checked.
Cross traffic warning
The concept
Two radar sensors in the rear bumper monitor
the area behind the vehicle.
At blind driveways or when driving out of diag‐
onal parking spaces, approaching cross traffic
is earlier detected by the system than possible
from the driver's seat.
The system indicates approaching traffic.
The lamp in the exterior mirror lights up, a sig‐
nal tone may sound, and the respective indica‐
tor is called up on the Control Display.
With the respective equipment variant, the
traffic area in front of the vehicle is monitored
as well. Two additional radar sensors are lo‐
cated in the front bumpers.
Seite 197
Driver assistance systems Controls
197
Online Edition for Part no. 0140 2 964 330 - VI/15
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