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Driver assistance systems
Note
●
Due to the syst
em's detection limits in the
surroundings, the systems may not give
warnings or intervene on time, or they
might do so even if it is not desired. In addi-
tion, the auxiliary systems may incorrectly
interpret a manoeuvre and, as a result,
warn the driver in an unexpected manner.
●
When the towing mode is selected, some
assist systems may react with limitations,
in an unusual way or may not be available.
Keep in mind the instructions relating to the
towing mode.
Drive assist sensors and
camer
as
Fr
ont radar
Fig. 145
On the front bumper: radar sensors.
Fig. 146 Detection area.
A radar sensor may be fitted to the front
bumper of the v
ehicl
e
›››
Fig. 145. The front
radar detects any objects in its detection
zone
›››
Fig. 146 and provides support for the
following functions:
●
Front Assist
›››
page 219.
●
Adaptive Cruise Control (ACC)
›››
page 222.
The radar can have a range of up to 120m
(400ft) depending on road and weather con-
ditions.
WARNING
The visibility of the radar sensor can be im-
paired by dir
t or environmental influences
such as rain, fog, snow, mud, dust, insects
etc. In this case the Front Assist and ACC
functions may stop working. The instrument
panel displays the following message: No
sensor vision! And the Front Assist un-
available or ACC unavailable warning
lights come on.
●
Clean the sensor area on the bumper as
indicated in
›
››
page 304, Cleaning the exte-
rior . When the radar sensor starts correct-
ly detecting again, the message disap-
pears from the screen and the functions
become available again.
CAUTION
●
If the r
adar sensor is dir
ty or poorly ad-
justed, the Front Assist system may give un-
necessary warnings and apply the brakes
inappropriately.
●
The operation of the radar can be affec-
ted by strong reflections of the emitted sig-
nal. This may occur, for example, in an en-
closed car park or due to the presence of
metallic objects (e.g. guard rails or sheets
used in road works).
●
The sensor may not be adjusted correct-
ly if it receives an impact. This may com-
promise the system's efficacy or discon-
nect it. If you have the feeling that the ra-
dar sensor is damaged or adjusted incor-
rectly, switch off the Front Assist and ACC
functions to avoid any damage. If this oc-
curs have it adjusted.
211
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