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System limits
Safety information
WARNING
The system can react incorrectly or not
at all due to the system limits. There is a risk of
accidents or risk of property damage. Observe
the information regarding the system limits
and actively intervene, if needed.◀
Limits of ultrasonic measurement
Ultrasonic measurements might not function in
the following situations:
▷ 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.
▷ If cargo protrudes.
▷ Low objects already displayed, e.g., curbs,
can move into the blind area of the sensors
before or after a continuous tone sounds.
False warnings
The system may issue a warning under the fol‐
lowing conditions even though there is no ob‐
stacle within the detection range:
▷ In heavy rain.
▷ When sensors are very dirty or covered
with ice.
▷ When sensors are covered in snow.
▷ On rough road surfaces.
▷ On uneven surfaces, such as speed
bumps.
▷ In large buildings with right angles and
smooth walls, for instance in underground
garages.
▷ In automatic vehicle washes.
▷ Due to heavy exhaust.
▷ Due to other ultrasound sources, for in‐
stance sweeping machines, high pressure
steam cleaners or neon lights.
If necessary, switch off automatic PDC activa‐
tion on obstacle detection, for instance in vehi‐
cle washes, to reduce false alarms.
Malfunction
A Check Control message is displayed.
The range of the sensors is shown as a shaded
area on the Control Display.
PDC has failed. Have the system checked by a
dealer’s service center or another qualified
service center or repair shop.
Surround View
Concept
Surround View comprises various camera as‐
sistance systems that help the driver when
parking, maneuvering, and at complex exits
and intersections.
▷ Rearview camera, refer to page 152
▷ Top View, refer to page 154.
Seite 151
Driving comfort Controls
151
Online Edition for Part no. 01402977904 - II/17
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