2005 Buick Rendezvous Owner's Manual - Page 164

When the System Does Not Seem to Work Properly The light may flash red when the vehicle is in REVERSE (R) if the ultrasonic sensors are not kept clean. So be sure to keep your rear bumper free of mud, dirt, snow, ice, and slush. Other conditions that may affect system performance include things like the vibrations from a jackhammer or the compression of air brakes on a very large truck. If after cleaning the rear bumper and then driving forward at least 15 mph (25 km/h), the display continues to flash red, see your dealer. If a trailer was attached to your vehicle, or a bicycle or an object was on the back of, or hanging out of your liftgate during your last drive cycle, the light may also flash red. The light will continue to flash whenever in REVERSE (R) until your vehicle is driven forward at least 15 mph (25 km/h) without any obstructions behind the vehicle. For cleaning instructions, see Washing Your Vehicle on page 5-98. Accessory Power Outlets With accessory power outlets you can plug in electrical equipment such as a cellular telephone or CB radio. There is one front power outlet/cigarette lighter located on the floor console in the cell phone storage compartment. There are also two rear power outlets. One is located in the rear of the floor console below the vents. The other is located in the rear of the vehicle on the driver's side behind the access door. Pull the cover down to use an accessory power outlet. When not in use, always cover the accessory power outlets 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. 3-26