Volvo XC90 Owner's Manual page 155

•
The driver opens the door or takes off
his/her seat belt
•
DSTC is put in Sport mode (see page 144)
•
ACC has kept the vehicle at a standstill for
more than 2 minutes
•
The engine has been switched off
•
The brakes have overheated
Turning ACC off completely
•
From standby mode, press
•
From active mode, press
The set speed and time interval are then
cleared from the system's memory and cannot
be resumed by pressing .
The radar sensor and its limitations
In addition to being used by ACC, the radar
sensor is also used by Distance Alert (see
page 159) and Collision Warning with Full
Auto-brake and Pedestrian Detection (see
page 168). This sensor is designed to detect
cars or larger vehicles driving in the same
direction as your vehicle, in the same lane.
WARNING
Accessories or other objects, such as extra
headlights, must not be installed in front of
the grille.
Modification of the radar sensor could make
its use illegal.
The radar sensor's capacity to detect vehicles
ahead is impeded:
once.
•
if the radar sensor is obstructed and can-
twice.
not detect other vehicles, for example in
heavy rain, or if snow or other objects are
obscuring the radar sensor.
NOTE
Keep the area in front of the radar sensor
clean.
•
if the speed of vehicles ahead is signifi-
cantly different from your own speed.
04 Comfort and driving pleasure
I n f o r m a t i o n P r o v i d e d b y :
*
Option/accessory, for more information, see Introduction.
Adaptive Cruise Control (ACC)*
Situations where ACC may not function
optimally
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.
•
If ACC is not functioning properly,
cruise control will also be disabled.
04
``
155