2003 Cadillac Escalade Owner's Manual - Page 162

URPA can be disabled by pressing the URPA on/off button located near the climate control system and radio. How the System Works URPA comes on automatically when the shift lever is moved into REVERSE (R) and the vehicle speed is less than 3 mph (5 km/h). When the system comes on, the three lights on the display will illuminate to let you know that the system is working. URPA senses how close your vehicle is to an object. The distance is determined by the four ultrasonic sensors located on the rear bumper. When you shift into REVERSE (R) and an object is detected, the following will occur in sequence depending on the distance from the object: At 5 feet (1.5 m) a chime will sound and one amber light will be lit; If chi , som ne abicycle,or pets are behind your vehicle, URPA won't tell you they are there. You could strike them and they could be injured or killed. Whether or not you are using URPA, check carefully behind your vehicle and then watch closely whenever you back up. ~ ~ ~ ~ at 40 inches (1 .O m) both amber lights will be lit; at 20 inches (0.5 m) a continuous chime will sound and all three lights (ambedambedred) will be lit; and at 1 foot (0.3 m) a continuous chime will sound and all three lights (amber/amber/red) will flash. URPA can detect objects 3 inches (7.6 cm) and wider, and at least 10 inches (25.4 cm) tall, but it cannot detect objects that are above the center of the Cadillac crest badge on the liftgate. In order for the rear sensors to recognize an object, it must be within operating range. 3-19