2007 Volvo S80 Owner's Manual - Page 150

in the display. Messages on the display Clean the radar sensor in the grille - The collision warning system is temporarily disengaged. The message is shown temporarily if for example slush has collected in front of the radar sensor. Collision warn. Service required - The collision warning system is disengaged. Contact an authorized Volvo workshop if the message remains. 153 04 Comfort and driving pleasure Park assist (option) Introduction The park assist system(s) are designed to assist you when driving into parking spaces, garages, etc. They utilize ultrasound sensors located in the bumpers to measure the distance to a vehicle or other object, or a person who may be close to the front or rear of the vehicle. WARNING These systems are designed to be a supplementary aid when parking the vehicle. They are not, however, intended to replace the driver's attention and judgement. Function The system is activated automatically when the vehicle is started. The indicator light in the button in the center console illuminates. The text Park Assist ON is shown in the center console display if reverse gear is selected or if the front sensors detect an object. The front park assist system is active from the time the engine is started until the vehicle exceeds a speed of approximately 10 mph (15 km/h). It is also active when the vehicle is backing up. Rear park assist is active when the engine is running and reverse gear has been selected. An intermittent audio signal becomes audible when your vehicle approaches an object. The frequency of the signal increases as you come closer to the object in front of or behind the vehicle. If the volume of another audio source from the audio system is high, this will be automatically lowered. The tone becomes constant at a distance of approximately 1 ft (30 cm). If there are objects within this distance both behind and in front of the vehicle, the signal alternates between front and rear speakers. Rear park assist