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Distance measurement
Fig. 99: Ultrasound sensors for distance measurement
The ultrasound sensors A in the rear bumpers (if
vehicle is fitted with relevant equipment) measure
the distance to the nearest obstacle. A detected
obstacle is reported through an intermittent tone.
The intervals shorten as the vehicle approaches the
obstacle. When the distance is less than approx. 12
in. (30 cm), a continuous tone sounds.
In the sensor blind spots (above and beneath the
sensors, e. g. in the case of objects that are over-
hanging or close to the ground), obstacles may not be
detected.
The warning tone volume can be adjusted in the mul-
tifunction display:
g Refer to chapter "Vehicle settings" on page 141.
Activating and deactivating ParkAssist
Activating ParkAssist
Automatic activation (up to a speed of approx. 9 mp
(15 km/h))
b Ignition on.
b Reverse gear engaged.
– or –
Backwards rolling detected.
Activating manually
e
e Assist e Display ParkAssist
Button
Deactivating ParkAssist
Deactivating manually
Fig. 100: Button on overhead console
e
Press button A in the overhead console.
�� The light indicator on the button lights up.
Driving and Driving Assistance
There is a blank line on the PCM. Manual
reactivation of the display on the PCM is not
possible.
Exceptions
Depending on the model type, ParkAssist cannot rec-
ognize the following things:
–
Sound-absorbing obstacles (e.g. winter condi-
tions, powder snow, fabric, hide or fur clothing).
–
Sound-reflecting obstacles (e.g. glass or smooth
painted surfaces).
–
Very thin obstacles (e.g. thin posts).
In addition, other ultrasonic sources (e.g. air brakes
of other vehicles, sweeping machines and jack ham-
mers) may interfere with obstacle detection.
Information on maintenance
e
Always keep the sensors free of dirt, ice and
snow to ensure that they are always fully func-
tional.
e
Do not damage the sensors by scouring or
scratching them.
e
Maintain a sufficient distance when using a high-
pressure cleaner. Too much pressure will dam-
age the sensors.
e
Structural vehicle modifications, e.g. license
plate/temporary license plate holder, or bent or
poorly fitted license plates, can impair operation
of the system.
Rear view camera
Activating the rear view camera
Automatically
b Reverse gear engaged and the ignition on.
– or –
Backwards rolling detected.
91
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