Fig. 122 Detection area.
A radar sensor may be tted to the front
bumper of the vehicle ››› Fig. 121. The front
radar detects any objects in its detection zone
››› Fig. 122 and provides support for the fol-
lowing functions:
•
Front Assist ››› page 169.
•
Adaptive Cruise Control (ACC)
›››
page 162.
The radar can have a range of up to 160m
(520ft) depending on road and weather condi-
tions.
WARNING
• The visibility of the radar sensor can be
impaired by dirt or environmental inuen-
ces such as rain, fog, snow, mud, dust, in-
sects etc. In this case the Front Assist and
ACC functions may stop working. The instru-
ment panel displays the following message:
No sensor vision! And the Front Assist
unavailable or ACC unavailable warning lights
come on.
•
Clean the sensor area on the bumper as
indicated in ››› page 313, Interior clean-
ing, Exterior cleaning. When the radar sensor
starts correctly detecting again, the message
disappears from the screen and the functions
become available again.
NOTICE
• If the radar sensor is dirty or poorly adjus-
ted, the Front Assist system may give unnec-
essary warnings and apply the brakes inap-
propriately.
•
The operation of the radar can be aected
by strong reections of the emitted signal.
This may occur, for example, in an enclosed
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 correctly if
it receives an impact. This may compromise
the system's eicacy or disconnect it. If you
have the feeling that the radar sensor is dam-
aged or adjusted incorrectly, switch o the
Front Assist and ACC functions to avoid any
damage. If this occurs have it adjusted.
Front camera
Fig. 123 On the windscreen: eld of vision
of the Lane Assist system camera.
Depending on the equipment, the vehicle may
be tted with a front camera on the front wind-
screen ››› Fig. 123. This camera detects lane
boundaries (lines) to provide support for the
following functions:
•
Lane Assist
›››
page 173.
•
Travel Assist ››› page 175.
•
Emergency assist ››› page 180.