Volvo XC70 2011, Owner'S Manual

Page: 166 / 316

04 Comfort and driving pleasure
Adaptive Cruise Control (ACC)*
04
166 *
Option/accessory, for more information, see Introduction.
Standby mode due to action by the driver
ACC is temporarily deactivated and put in
standby mode:
•
when the brakes are applied
•
if the gear selector is moved to N
•
if the accelerator pedal is depressed for
more than
1 minute.
NOTE
If the accelerator pedal is only depressed for
a short time, such as when passing another
vehicle, ACC is deactivated temporarily and
is reactivated when the pedal is released.
Automatic standby mode
Adaptive cruise control is linked to other sys-
tems such as the stability and traction control
system (DSTC). If this system is not functioning
properly, adaptive cruise control is automati-
cally deactivated and will go into standby
mode.
In the event of automatic deactivation, an audi-
ble signal will sound and the message
Cruise
control Cancelled
is shown in the display.
The driver must then intervene and adapt the
vehicle's speed to the surrounding traffic and
regulate the distance to the vehicle ahead.
An automatic switch to standby mode may be
caused if:
•
the vehicle's speed falls below 20 mph
(30 km/h)
•
the wheels lose traction
•
brake temperature is high
•
engine speed (rpm) is too low or too high
•
the radar sensor is obstructed by, for
example, wet snow or rain.
Turning ACC off completely
A short press on in standby mode or a long
press in active mode turns ACC off completely.
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 171) and Collision Warning with Auto-
brake (see page 174). 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.