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07 Driver support
07
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* 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:
•
Distance Warning*
•
Adaptive cruise control*
•
Collision Warning System with Auto
Brake and Cyclist and Pedestrian Detec-
tion*
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.
Modification of the radar sensor could result
in it being illegal to use.
Related information
•
Radar sensor - limitations (p. 209)
•
Adaptive cruise control - ACC* (p. 199)
•
Collision warning system* (p. 224)
•
Distance Warning* (p. 214)
Radar sensor - limitations
A radar sensor (p. 209) has certain limitations
- due to its limited field of vision for example.
The capacity of the adaptive cruise control to
detect a vehicle in front is significantly
reduced if:
•
the speed of vehicles in front is signifi-
cantly different from your own speed
•
its radar sensor becomes blocked - e.g.
in heavy rain or slush, or if other objects
have collected in front of the radar sen-
sor.
NOTE
Keep the area in front of the radar sensor
clean - see subheading "Maintenance"
(p. 228).
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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