2008 Volvo S80 Owner's Manual - Page 174

178 04 Comfort and driving pleasure Park assist (option) Front park assist The distance monitored in front of the vehicle is approximately 2.5 ft (0.8 m). The audible signal comes from the audio system's front speakers. It may not be possible to combine auxiliary headlights and front park assist since these lights could trigger the system's sensors. Faults in the system If the information symbol illuminates and Park Assist syst Service required is shown on the information display, this indicates that the system is not functioning properly and has been disengaged. Consult a trained and qualified Volvo service technician. CAUTION In certain circumstances, the park assist system may give unexpected warning signals that can be caused by external sound sources that use the same ultrasound frequencies as the system. This may include such things as the horns of other vehicles, wet tires on asphalt, pneumatic brakes, motorcycle exhaust pipes, etc. This does not indicate a fault in the system. Cleaning the sensors The sensors must be cleaned regularly to ensure that they work properly. Clean them with water and a suitable car washing detergent. Ice and snow covering the sensors may cause incorrect warning signals.