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A display appears as soon as Park Distance
Control (PDC) is activated.
The range of the sensors is represented in the
colors green, yellow and red.
When the image of the rearview camera is dis‐
played, the reel can be made to PDC:
"Rear view camera"
System limits
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.
False warnings
PDC may issue a warning under the following
conditions even though there is no obstacle
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, e.g., in underground ga‐
rages.
▷ In automatic car washes.
▷ Through heavy pollution.
▷ Due to other ultrasound sources, e.g.,
sweeping machines, high pressure steam
cleaners or neon lights.
The malfunction is signaled by a continu‐
ous tone alternating between the front and
rear speakers. As soon as the malfunction
due to other ultrasound sources is no lon‐
ger present, the system is again fully func‐
tional.
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.
To ensure full functionality:
▷ Keep the sensors clean and free of ice.
▷ dimmedDo not put any stickers on sen‐
sors.
▷ When using high-pressure washers, do not
spray the sensors for long periods and
maintain a distance of at least 12 in/30 cm.
Seite 122
Controls Driving comfort
122
Online Edition for Part no. 01 40 2 961 270 - II/15
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