Volvo XC90 TWIN ENGINE Owner's Manual page 309

Automatic standby mode
The adaptive cruise control is dependent on
other systems, e.g. Electronic Stability Control
50
ESC . If any of the other systems stops working,
the adaptive cruise control is deactivated auto-
matically.
WARNING
With automatic standby mode, the driver is
warned via an acoustic signal and a message
on the driver display.
•
The driver must then regulate the car's
speed, apply the brakes as needed and
maintain a safe distance to other vehicles.
Automatic standby mode 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.
•
speed is reduced to below 30 km/h
(20 mph) - only applies to cars with manual
gearbox.
•
the driver opens the door.
•
the driver takes off the seatbelt.
Electronic Stability Control
50
•
engine speed is too low/high.
•
one or more wheels lose traction.
•
brake temperature is high.
•
the parking brake is applied.
•
the camera and radar unit is covered by e.g.
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.
WARNING
A significant increase in speed may follow
when the speed is resumed with the
steering wheel button.
Related information
•
Adaptive Cruise Control* (p. 298)
(1).
DRIVER SUPPORT
307
* Option/accessory.