07 Driver support
Radar sensor
Radar sensor - limitations
A radar sensor (p. 216) has certain limitations
- due to its limited field of vision for example.
The function of the radar sensor is to detect
cars or larger vehicles in the same direction,
in the same lane.
The capacity of the adaptive cruise control to
detect a vehicle in front is significantly
reduced if:
The radar sensor is used by the following
functions:
Distance Warning*
the speed of vehicles in front is signifi-
cantly different from your own speed
•
•
•
•
Adaptive cruise control*
its radar sensor becomes blocked - e.g.
•
Collision Warning System with Auto
Brake and Cyclist and Pedestrian Detec-
tion*
in heavy rain or slush, or if other objects
have collected in front of the radar sen-
sor.
IMPORTANT
NOTE
In the event of visible damage to the car's
grille, or if you suspect that the radar sen-
sor may be damaged:
Keep the area in front of the radar sensor
clean - see subheading "Maintenance"
(p. 235).
Contact a workshop - an authorised
Volvo workshop is recommended.
•
Field of vision
The function may completely or partially
disappear - or malfunction - if the grille,
the radar sensor or its bracket is damaged
or has loosened.
ACC 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.
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.
Modification of the radar sensor could result
in it being illegal to use.
07
Small vehicles, such as motorcycles, or
vehicles not driving in the centre of the
lane can remain undetected.
Related information
Radar sensor - limitations (p. 216)
•
In bends the radar sensor may detect the
wrong vehicle or lose a detected vehicle
from view.
Adaptive cruise control - ACC* (p. 206)
•
Collision warning system* (p. 231)
•
Distance Warning* (p. 221)
•
216
* Option/accessory, for more information, see Introduction.
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