2011 Volvo S60 Owner's Manual - Page 148

04 Comfort and driving pleasure Adaptive Cruise Control (ACC)* The following only applies at speeds below approximately 20 mph (30 km/h): If ACC changes target vehicles (the vehicle that the radar sensor has detected) from a moving vehicle to a stationary one, the system will apply the brakes in your vehicle. vehicle is not moving. This means that the driver will have to apply the brakes. This happens if: The radar sensor and its limitations In addition to being used by ACC, the radar sensor is also used by Distance Alert (see page 153) and Collision Warning with Full Auto-brake and Pedestrian Detection (see page 162). This sensor is designed to detect cars or larger vehicles driving in the same direction as your vehicle, in the same lane. WARNING 04 The driver presses the brake pedal The parking brake is activated The gear selected is moved to P,N or R The driver presses the ACC in standby mode button to put At speeds above 20 mph (30 km/h), ACC will not react to a stationary vehicle and apply the brakes but will instead accelerate to the previously set speed. The driver must actively apply the brakes to stop the vehicle. The parking brake is applied automatically In certain situations, ACC will apply the parking brake in order to continue keeping the vehicle at a standstill. This happens if: WARNING Accessories or other objects, such as extra headlights, must not be installed in front of the grille. Modification of the radar sensor could make its use illegal. ACC disengages and goes into standby mode if: • Your vehicle's speed goes below 10 mph (15 km/h) and ACC cannot determine if the target object is a stationary vehicle or some other type of object such as e.g., a speed bump. • The driver opens the door or takes off his/her seat belt The radar sensor's capacity to detect vehicles ahead is impeded: • DSTC is put in Sport mode (see page 138) • ACC has kept the vehicle at a standstill for more than 2 minutes • if the radar sensor is obstructed and cannot detect other vehicles, for example in heavy rain, or if snow or other objects are obscuring the radar sensor. • Your vehicle's speed goes below 10 mph (15 km/h) and the vehicle ahead turns so that ACC no longer has a target vehicle to follow. • The engine has been switched off • The brakes have overheated Turning ACC off completely Pressing turns ACC off completely. The set speed and time interval are then cleared from the system's memory and cannot be resumed by pressing . NOTE Keep the area in front of the radar sensor clean. No automatic braking when at a standstill In certain situations, ACC will no longer apply the brakes and go into standby mode while the • if the speed of vehicles ahead is significantly different from your own speed. 148 * Option/accessory, for more information, see Introduction.