Volvo 2008 V70 Owner's Manual page 152

Cruise control is deactivated, either with a short press on
etc. The set speed, for example 55 mph, is then shown in parentheses. Speed and time interval are resumed by pressing
.
WARNING
There may be a significant increase in speed after the
A short press on
and cannot be resumed. When ACC is activated, the vehicle's speed increases by approximately 1 mph (1 km/h) each
additional time is pressed.
Deactivation due to action by the driver
ACC is deactivated:
when the brakes are applied
if the gear selector is moved to N
if the accelerator pedal is depressed for an extended period.
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 deactivation
Adaptive cruise control is linked to other systems such as ABS, the stability and traction control system (DSTC) and
the Distance Alert system. If any of these systems are not functioning properly, adaptive cruise control is automatically
deactivated.
In the event of automatic deactivation a signal will sound and the message
display. The driver must then intervene and adapt the vehicle's speed to the surrounding traffic.
Automatic deactivation may be caused if:
the vehicle's speed falls below 20 mph (30 km/h)
the wheels lose traction or if the anti-lock brake system (ABS) is activated
brake temperature is high
engine speed (rpm) is too low
the radar sensor is obstructed by, for example, wet snow or rain.
162
04 Comfort and driving pleasure
Adaptive Cruise Control-ACC
The radar sensor and its limitations
The radar sensor is used by both Adaptive Cruise Control and the Collision Warning System with Auto-brake (see
page 168). It is designed to detect cars or larger vehicles driving in the same direction as your vehicle.
WARNING
in standby mode or a long press in active mode deactivates ACC. The set speed is then cleared
, or by action taken by the driver, such as braking,
button has been pressed.
Cruise Control Canceled is shown in the