2012 Volvo XC70 Owner's Manual - Page 172

04 Comfort and driving pleasure Collision warning with Full Auto-brake and Pedestrian Detection* WARNING Function Brake Support If the risk of collision continues to increase after the collision warning has been given, Brake Support is activated. Brake Support prepares the brake system to react quickly, and the brakes are applied slightly. This may be experienced as a light tug. If the brakes are applied quickly, full braking effect will be provided. Brake Support also increases brake force if the system determines that the driver has not applied adequate pressure on the brake pedal. Function overview • Collision Warning will not provide a warning or brake the vehicle for pedestrians in darkness or in tunnels, even if there is street lighting in the area. The auto-brake function can help prevent a collision or reduce the speed at impact but the driver should always apply the brakes for the best possible braking effect, even if auto-brake is actively applying the brakes. Never wait for a collision warning. 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, even when the collision warning system is in use. Maintenance of the Collision Warning system's components must only be performed by a trained and qualified Volvo technician. • 04 • Auto-brake If a collision is imminent and the driver has not applied the brakes or begun to steer around the vehicle or pedestrian, the auto-brake function is activated without the driver pressing the brake pedal. Full brake force is applied to help reduce the vehicle's speed when the collision occurs or limited brake force is applied if this is sufficient to avoid the collision. Visual warning signal, collision risk Radar sensor Camera • Collision Warning The radar sensor and the camera work together to detect a pedestrian, stationary vehicles and vehicles that are moving in the same direction as your vehicle. If there is a risk of collision with a vehicle or a pedestrian, the driver is alerted by a flashing red warning light and an audible warning signal. Collision warning is active at speeds above 3 mph (4 km/h). NOTE The auto-brake and brake support functions are always on and cannot be turned off. 172 * Option/accessory, for more information, see Introduction.