2008 Volvo S80 Owner's Manual - Page 170

174 04 Comfort and driving pleasure Driver Alert System-option Lane Departure Warning (LDW)-general information This function is designed to help reduce the risk of accidents in situations where the vehicle leaves its lane and there is a risk of driving off the road or into the opposite lane. LDW consists of a camera that monitors the lane's side marker lines. The driver is alerted by an audible signal if the vehicle crosses a side marker line or the road's center dividing line. Operation and function LDW can be switched on or off by pressing the button on the center console. A light in the button illuminates when the function is on. The trip computer display shows Lane Depart Warn Unavailable when the function is in standby mode. When LDW is in standby mode, the function is activated automatically after the camera has monitored the road's side marker lines and the vehicle's speed exceeds 40 mph (65 km/h). Lane Depart Warn Available will be displayed. If the camera can no longer monitor the road's side marker lines, or if the vehicle's speed falls below 37 mph (60 km/h), LDW will return to standby mode and Lane Depart Warn Unavailable will be displayed. If the vehicle unexpectedly crosses the lane's left or right side marker lines, the driver will be alerted by an audible signal. No warning signal will be given in the following situations: The turn signal is being used The driver's foot is on the brake pedal1