2012 Volvo XC70 Owner's Manual - Page 156

04 Comfort and driving pleasure Adaptive Cruise Control (ACC)* When the symbol on the left side of the display changes to , the radar sensor has detected another vehicle ahead. The distance to a vehicle ahead is only regulated when this symbol ( ) is illuminated. Setting a time interval The set time interval to vehicles ahead can be and decreased by increased by pressing pressing . The current time interval is shown briefly in the display following adjustment. Different time intervals can be selected and are shown in the display as 1-5 horizontal bars. The greater the number of bars, the longer the time interval. One bar represents a time interval of approximately 1 second; 5 bars is approximately 2.5 seconds. At low speeds, when the distance to the vehicle ahead is short, ACC increases the time interval slightly. In order to follow the vehicle ahead as smoothly as possible, ACC allows the time interval to vary considerably in certain situations. The number of bars indicating the selected time interval are shown while the setting is being made and for several seconds afterward. A smaller version of the symbol is then shown to the right in the display. The same symbol is also displayed when Distance Alert is in active mode, see page 163 . Changing the set speed 04 After a speed has been set, it can be increased or decreased by using the or buttons. Each time one of these buttons is pressed, the vehicle's speed changes by 5 mph (approximately 8 km/h). butWhen the system is in active mode, the ton has the same function as , but results in a smaller increase in speed. Standby mode (temporary deactivation) Press to temporarily deactivate cruise control (put it in standby mode). The set speed, for example 55 mph, is then shown in parentheses. The previously set speed and time interval are resumed by pressing . NOTE WARNING • If one of the Adaptive Cruise Control buttons is pressed for more than approximately one minute, ACC will be deactivated. The engine must then be switched off and restarted to reset ACC. In some situations Adaptive Cruise Control cannot be put in active mode. Cruise control Unavailable is shown in the display, see page 161. • • Only use a time interval that is suitable in current traffic conditions. A short time interval gives the driver limited reaction time if an unexpected situation occurs in traffic. WARNING There may be a significant increase in speed after the button has been pressed. • When ACC is in active mode, the vehicle's speed increases by approximately 1 mph (1 km/h) each additional time is pressed. 156 * Option/accessory, for more information, see Introduction.