Volvo 2013 XC70 - Manual (Page 146)

04 Driver support
Adaptive Cruise Control (ACC)*
04
144 * Option/accessory, for more information, see Introduction.
• Your vehicle's speed goes below 10 mph
(15 km/h) and ACC cannot determine if the
target object is a stationary vehicle or some
other type of object such as e.g., a speed
bump.
• Your vehicle's speed goes below 10 mph
(15 km/h) and the vehicle ahead turns so
that ACC no longer has a target vehicle to
follow.
No automatic braking when at a
standstill
In certain situations, ACC will no longer apply
the brakes and go into standby mode while the
vehicle is not moving. This means that the
driver will have to apply the brakes.
This happens if:
• The driver presses the brake pedal
• The parking brake is activated
• The gear selected is moved to P,N or R
• The driver presses the button to put
ACC in standby mode
The parking brake is applied
automatically
In certain situations, ACC will apply the parking
brake in order to continue keeping the vehicle
at a standstill.
This happens if:
• The driver opens the door or takes off
his/her seat belt
• DSTC is put in Sport mode (see page 132)
• 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 once.
• From active mode, press twice.
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 149) and Collision Warning with Full
Auto-brake and Pedestrian Detection (see
page 158). 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:
• if the radar sensor is obstructed and can-
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.