2008 Volvo S80 Owner's Manual - Page 157

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 button has been pressed. . in standby mode or a long press in active mode deactivates ACC. The set speed is then cleared and cannot be resumed. When ACC is activated, the vehicle's speed increases by approximately 1 mph (1 km/h) each additional time 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 Cruise Control Canceled is shown in the 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. is 160 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 166). It is designed to detect cars or larger vehicles driving in the same direction as your vehicle. WARNING