Volvo S 90 2017, Owner'S Manual

Page: 272 / 570

DRIVER SUPPORT
* Option/accessory. 270
Distance Alert
*
limitations
Distance Alert uses the same radar sensor as
Adaptive Cruise Control
*
and has several limita-
tions.
WARNING
•
The radar sensor has a limited field of
vision. In some situations it may detect a
vehicle later than expected or not detect
other vehicles at all.
•
The radar sensor cannot cover all driving
situations and traffic, weather and road
conditions.
•
The driver is responsible for maintaining a
safe distance and speed and must inter-
vene if the various driver support systems
do not maintain a suitable speed or suita-
ble distance to the vehicle ahead.
•
Maintenance of radar sensor components
may only be performed by a trained and
qualified Volvo technician.
•
Strong sunlight, reflections from the road
surface, strong lighting contrasts or using
sunglasses may make the warning light in
the windshield difficult to see.
WARNING
•
Poor weather or winding roads can affect
the radar sensor's capacity to detect vehi-
cles ahead.
•
A vehicle's size (e.g., a motorcycle) can
also affect the radar sensor's capacity to
detect another vehicle. This may result in
the warning light illuminating at a shorter
distance than the one that has been set
or not illuminating at all.
•
High speeds may also result in the warn-
ing light illuminating at a shorter distance
than the one that has been set due to
limitations in the radar sensor's range.
For additional information, see also the article
"Radar sensor limitations."
Related information
•
Radar sensor limitations (p. 300)
•
Distance Alert
*
(p. 268)
Adaptive Cruise Control (ACC)
*
ACC is an optional system designed to assist
the driver by maintaining a set speed or a set
time interval to the vehicle ahead.
ACC helps provide more relaxed driving on long
trips on highways or other major roads in a rela-
tively even flow of traffic.
The camera and radar sensor monitor the distance to
the vehicle ahead (generic illustration - certain details
may vary from model to model)
The driver sets that desired speed and time inter-
val to the vehicle ahead. When the camera and
radar sensor detects a slower moving vehicle
ahead, your vehicle's speed is automatically
adapted. When there are no longer slower mov-
ing vehicles ahead, your vehicle will accelerate to
resume the set speed.
ACC is designed to follow a vehicle ahead in the
same lane and maintain a time interval to that