Volvo XC90 Owner's Manual page 323

Adaptive cruise control*
The adaptive cruise control (ACC
driver to maintain an even speed combined
with a pre-selected time interval to the vehi-
cle ahead.
An adaptive cruise control can provide a more
relaxing driving experience on long journeys on
motorways and long straight main roads in
smooth traffic flows.
The camera and radar unit measures the distance to
the vehicle ahead.
The driver selects the desired speed and a
time interval to the vehicle ahead. If the cam-
era and radar unit detects a slower vehicle in
front of the car, the speed is adapted automat-
ically via the preset time interval to the vehicle.
37 This function can be either standard or optional, depending on market.
38 Adaptive Cruise Control
37
When the road is clear again the car returns to
the selected speed.
38
) helps the
If the cornering support* function is activated,
this may also affect the speed of the car.
WARNING
The function is supplementary driver
•
support intended to facilitate driving
and make it safer – it cannot handle all
situations in all traffic, weather and
road conditions.
The driver is advised to read all sec-
•
tions in the Owner's Manual that relate
to this function to learn about factors
such as its limitations and what the
driver should be aware of before using
the system.
Driver support functions are not a sub-
•
stitute for the driver's attention and
judgement. The driver is always
responsible for ensuring the car is
driven in a safe manner, at the appro-
priate speed, with an appropriate dis-
tance to other vehicles, and in accord-
ance with current traffic rules and reg-
ulations.
DRIVER SUPPORT
Adaptive Cruise Control regulates the speed
with acceleration and braking. It is normal for
the brakes to emit a low sound when they are
being used to adjust the speed.
The adaptive cruise control aims to control the
speed in a smooth way. In situations that
demand sudden braking the driver must brake
himself/herself. This applies in cases of large
speed differences or if the vehicle in front
brakes suddenly. Due to the limitations of the
radar unit, braking may come unexpectedly or
not at all.
The adaptive cruise control aims to follow the
vehicle ahead in the same lane at a time inter-
val set by the driver. If the radar unit cannot
see any vehicle in front then the car will
instead maintain the speed set and stored by
the driver. This also takes place if the speed of
the vehicle ahead increases and exceeds the
stored speed.
IMPORTANT
Maintenance of driver support components
must only be performed at a workshop –
an authorised Volvo workshop is recom-
mended.
* Option/accessory.
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