Volvo 2008 V70 Owner's Manual page 150

Strong sunlight, reflections, extreme light contrasts, the use of sunglasses, or if the driver is not looking straight
ahead may make the visual warning signal in the windshield difficult to see.
WARNING
Cruise control only warns of vehicles detected by the radar sensor, see
warning or the warning may be delayed. The driver should always apply the brakes when necessary.
160
04 Comfort and driving pleasure
Adaptive Cruise Control-ACC
Operation
Activate and resume settings, increase speed
Standby mode, On/Off
Set a time interval
Activate and set a speed
Set speed (parentheses indicate standby mode)
Time interval while it is being set
Time interval after it has been set
Engaging the cruise control function
Before ACC can be used, it must first be put in standby mode.
To do so, press
Setting a speed
Use the or buttons
the display.
NOTE
Adaptive cruise control cannot be engaged at speeds below 20 mph (30 km/h).
. The symbol illuminates in the display and (---)
to store (set) the vehicle's current speed. The set speed, for example
page 162. In some cases there may be no
indicate that ACC is in standby mode.
55 mph, is shown in