2012 Volvo XC70 Owner's Manual - Page 160

04 Comfort and driving pleasure Adaptive Cruise Control (ACC)* In curves, the radar sensor may detect the wrong vehicle or lose sight of the target vehicle. WARNING Fault tracing and actions If the message Radar blocked See manual is displayed, this means that the radar signals from the sensor have been obstructed and that a vehicle ahead cannot be detected. This, in turn, means that the functions of the ACC, Distance Alert, and Collision Warning System with Auto-brake and Pedestrian Detection will not function. The table lists possible causes for this message being displayed, and suitable actions. • WARNING • 04 Adaptive Cruise Control cannot cover all driving situations and traffic, weather and road conditions. The "Function" section provides information about limitations that the driver must be aware of before using this feature. This system is designed to be a supplementary driving aid. It is not, however, intended to replace the driver's attention and judgement. The driver is responsible for maintaining a safe distance and speed and must intervene if Adaptive Cruise Control does not maintain a suitable speed or suitable distance to the vehicle ahead. Maintenance of ACC components may only be performed by a trained and qualified Volvo technician. Adaptive Cruise Control is not a collision avoidance system. The driver is always responsible for applying the brakes if the system does not detect another vehicle. Adaptive Cruise Control does not react to people or animals, or small vehicles such as bicycles and motorcycles. It also does not react to slow moving, parked or approaching vehicles, or stationary objects. Do not use Adaptive Cruise Control in demanding driving conditions such as city driving or other heavy traffic situations, in slippery conditions, when there is a great deal of water or slush on the road, during heavy rain or snow, in poor visibility, on winding roads or on highway on- or off-ramps. • • • • Cause The surface of the radar in the grille is dirty or obstructed in some way. Heavy rain or snow is interfering with the radar signals. Action Clean the radar surface, or remove the object causing the obstruction. No action possible. Heavy precipitation may affect the function of the radar. 160 * Option/accessory, for more information, see Introduction.