2009 Buick Enclave Owner's Manual - Page 100

2-36 Features and Controls • A tow bar is attached to the vehicle. The following describes how the URPA display lights appear as the vehicle gets closer to a detected object: Description amber light amber/amber lights amber/amber/red lights amber/amber/red lights flashing The system can be disabled through the Driver Information Center (DIC). See "Park Assist" under DIC Operation and Displays on page 3-43 for more information. English 8 ft 40 in 23 in 1 ft Metric 2.5 m 1.0 m 0.6 m 0.3 m • 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. This may occur under the following conditions: • The driver disables the system. • 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 5-83. When the System Does Not Seem to Work Properly If the URPA system does not activate due to a temporary condition, the message PARK ASSIST OFF displays on the DIC and a red light will be shown on the rear URPA display when the shift lever is moved into R (Reverse). • A trailer was attached to the vehicle, or a bicycle or an object was hanging out of the liftgate during the last drive cycle, the red light may illuminate in the rear display. Once theattached object is removed, URPA will return to normal operation.