2010 Buick Lucerne Owner's Manual - Page 145

Object Detection Systems Ultrasonic Rear Parking Assist (URPA) For vehicles with the URPA system, it operates at speeds less than 8 km/h (5 mph), and assists the driver with parking and avoiding objects while in R (Reverse). The sensors on the rear bumper are used to detect the distance to an object up to 2.5 m (8 ft) behind the vehicle, and at least 25 cm (10 in) off the ground. WARNING: (Continued) the vehicle before backing up. While backing, be sure to look for objects and check the vehicle's mirrors. The display is located on the rear shelf, below the rear window, and can be seen by looking over your right shoulder. { WARNING: The Ultrasonic Rear Parking Assist (URPA) system does not replace driver vision. It cannot detect: . Objects that are below the bumper, underneath the vehicle, or if they are too close or far from the vehicle Children, pedestrians, bicyclists, or pets. . URPA uses three color-coded lights to provide distance and system information. If you do not use proper care before and while backing; vehicle damage, injury, or death could occur. Even with URPA, always check behind (Continued) 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. 3-37