2009 Cadillac XLR-V Owner's Manual - Page 99

How the System Works URPA comes on automatically when the shift lever is moved into R (Reverse). The rear display briefly illuminates to indicate the system is working. URPA operates only at speeds less than 3 mph (5 km/h). If the vehicle is above this speed, the red light on the rear display will flash. To be detected, objects must be at least 10 inches (25.4 cm) off the ground and below trunk level. Objects must also be within 5 feet (1.5 m) from the rear bumper. This distance may be less during warmer or humid weather. A single beep will sound the first time an object is detected between 20 inches (0.5 m) and 5 feet (1.5 m) away. Beeping will occur when the vehicle is closer than 20 inches (0.5 m) from the object. The following describes what will occur with the URPA display as the vehicle gets closer to a detected object: Description amber light amber/amber lights amber/amber/red lights/continuous beep amber/amber/red lights flashing and continuous beep English 5 ft 40 in 20 in 1 ft Metric 1.5 m 1.0 m 0.5 m 0.3 m When the System Does Not Seem to Work Properly If the URPA system will not activate due to a temporary condition, a red light will be shown on the rear URPA display when the shift lever is moved into R (Reverse). This occurs under the following conditions: • The ultrasonic sensors are not clean. Keep the vehicle's rear bumper free of mud, dirt, snow, ice and slush. For cleaning instructions, see Washing Your Vehicle on page 6-77. • An object was hanging out of the trunk during the last drive cycle. Once the object is removed, URPA will return to normal operation. • The vehicle's bumper is damaged. Take the vehicle to your dealer/retailer to repair the system. • Other conditions may affect system performance, such as vibrations from a jackhammer or the compression of air brakes on a very large truck. If the system is still disabled after driving forward at least 15 mph (25 km/h), take the vehicle to your dealer/retailer. 2-41