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07 Driver support
07
* Option/accessory, for more information, see Introduction.
209
Radar sensor
The function of the radar sensor is to detect
cars or larger vehicles in the same direction,
in the same lane.
The radar sensor is used by the following
functions:
•
Adaptive cruise control*
•
Collision Warning with Auto Brake and
Pedestrian Detection*
•
Distance Warning*
Modification of the radar sensor could result
in it being illegal to use.
IMPORTANT
In the event of visible damage to the car's
grille, or if you suspect that the radar sen-
sor may be damaged:
•
Contact a workshop - an authorised
Volvo workshop is recommended.
The function may completely or partially
disappear - or malfunction - if the grille,
the radar sensor or its bracket is damaged
or has loosened.
Related information
•
Radar sensor - limitations (p. 209)
•
Adaptive cruise control (ACC)* (p. 199)
•
Collision warning system* (p. 223)
•
Distance Warning* (p. 214)
Radar sensor - limitations
The radar sensor (p. 209) has certain limita-
tions, due to its limited field of vision,
amongst other things.
The capacity of the radar sensor to detect
vehicles in front is reduced significantly:
•
if the radar sensor becomes blocked and
cannot detect other vehicles e.g. in heavy
rain or slush, or if other objects have col-
lected in front of the radar sensor.
NOTE
Keep the surface in front of the radar sen-
sor clean.
•
if the speed of vehicles in front is signifi-
cantly different from your own speed.
Field of vision
The radar sensor has a limited field of vision.
In some situations another vehicle is not
detected, or the detection is made later than
expected.
ACC field of vision.
Sometimes the radar sensor is late at
detecting vehicles at close distances, e.g.
a vehicle that drives in between the car
and vehicles in front.
Small vehicles, such as motorcycles, or
vehicles not driving in the centre of the
lane can remain undetected.
In bends the radar sensor may detect the
wrong vehicle or lose a detected vehicle
from view.
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