2002 Lincoln Navigator Owner Guide 1st Printing - Page 158

Driving This system is not designed to prevent contact with small or moving objects. The system is designed to provide a warning to assist the driver in detecting large stationary objects to avoid damaging the vehicle. The system may not detect smaller objects, particularly those close to the ground. The RSS will assist the driver in detecting certain objects while the vehicle slowly moves in reverse at speeds less than 4.8 km/h (3 mph). The RSS is not effective at speeds greater than 4.8 km/h (3 mph) and may not detect certain angular or moving objects. The reverse sensing system detects obstacles within approximately 1.8 meters (5.9 ft.) of the rear bumper with a decreased coverage area at the outer corners of the bumper, (refer to the figures for approximate zone coverage areas). As you move closer to the obstacle, the rate of the tone increases. When the distance to the obstacle is less than 25.0 cm (10 in.), the tone will sound continuously. If the system detects a stationary or receding object further than 25.0 cm (10 in.) from the side of the vehicle, the tone will sound for only three seconds. Once the system detects an object approaching, the tone will sound again. 158