2006 Buick Lucerne Owner's Manual - Page 145

• The ultrasonic sensors are not kept clean. So, be sure to keep your vehicle's rear bumper free of mud, dirt, snow, ice, and slush. For cleaning instructions, see Washing Your Vehicle on page 5-87. If the DIC still displays the PARK ASSIST OFF message after cleaning the bumper and driving forward at a speed of at least 15 mph (25 km/h), see your dealer. Accessory Power Outlet(s) The accessory power outlets can be used to plug in electrical equipment such as a cellular telephone or CB radio. Your vehicle has two power outlets. One is located next to the ashtray and the other is located on the right forward lower edge of the driver's seat. Your vehicle may have a small cap that must be pulled down to access the accessory power outlet. If it does, when not using the outlet be sure to cover it with the protective cap. Notice: Leaving electrical equipment on for extended periods will drain the battery. Always turn off electrical equipment when not in use and do not plug in equipment that exceeds the maximum amperage rating. Certain electrical accessories may not be compatible to the accessory power outlets and could result in blown vehicle or adapter fuses. If you experience a problem see your dealer for additional information on the accessory power outlets. • Other conditions that may affect system performance include vibrations from a jackhammer or the compression of air brakes on a very large truck or other mechanical devices that interfere with URPA performance. • When URPA is disabled without driver action and the driver attempts to turn URPA back on using the Driver Information Center (DIC), the PARK ASSIST ON option will not be selectable if the necessary conditions stated above for normal system operation are not met. As always, drivers should use care when backing up a vehicle. Always look behind you, being sure to check for other vehicles, obstructions and blind spots. For Driver Information Center messages related to URPA, see DIC Warnings and Messages on page 3-56. If the bumper is damaged, your URPA system may not work properly. Take the vehicle to your dealer to repair the system. 3-21