Volvo XC90 TWIN ENGINE Owner's Manual page 304

DRIVER SUPPORT
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To temporarily switch off Adaptive Cruise Control
and set it in standby mode:
–
Press the steering wheel button
> The
symbol on the driver display
changes colour from WHITE to GREY and
the stored speed in the centre of the
speedometer changes from BEIGE to
GREY.
In standby mode, the driver must him/herself
control both speed and distance.
When the adaptive cruise control is in standby
mode and the car drives too close to a vehicle
ahead, the driver is warned about the short dis-
tance by the Distance Warning function instead
(see reference to the heading "Distance Warn-
ing" at the end of this section).
Standby mode on driver intervention
The adaptive cruise control is temporarily deacti-
vated and set in standby mode if:
•
the foot brake is used
•
the gear selector is moved to N position
•
the driver maintains a speed higher than the
stored speed for longer than 1 minute.
In this situation, the driver must intervene and
adapt the speed and distance to the vehicle
ahead.
A temporary increase in speed with the accelera-
tor pedal, e.g. during overtaking, does not affect
302
the setting - the car returns to the last stored
speed when the accelerator pedal is released.
Automatic standby mode
(2).
Adaptive cruise control is dependent on other
systems, e.g. stability control/anti-skid ESC. If any
of these systems stops working, adaptive cruise
control is switched off automatically.
In the event of automatic deactivation a signal will
sound and a message is shown in the driver dis-
play. The driver must then intervene and adapt
the speed and distance to the vehicle ahead.
Automatic deactivation may occur if:
•
the speed is below 5 km/h (3 mph) and ACC
is uncertain whether the vehicle ahead is a
stationary vehicle or an object, such as a
speed bump.
•
the speed is below 5 km/h (3 mph) and the
vehicle ahead turns off so that ACC no
longer has a vehicle to follow.
•
the driver opens the door
•
the driver takes off the seatbelt
•
engine speed is too low/high
•
wheels lose traction
•
brake temperature is high
•
the parking brake is applied
•
the radar unit is covered by e.g. wet snow or
heavy rainfall (camera lens/radio waves are
blocked).
Reactivating adaptive cruise control
from standby mode
NOTE: The illustration is schematic - details may vary
depending on car model.
To reactivate ACC from standby mode:
–
Press the steering wheel button
> The speed is then set to the most recently
stored speed.
NOTE
A marked speed increase may occur once the
speed has been resumed by pressing steer-
ing wheel button .
Related information
•
Adaptive cruise control* (p. 296)
•
Distance Warning* (p. 293)
* Option/accessory, for more information, see Introduction.
(1).