2013 Buick LaCrosse Owner Manual - Page 248

9-46 Driving and Operating . 2. Corner of the rear bumper. When the System Does Not Seem to Work Properly The RVC system may not work properly or display a clear image if: . . Ice, snow, mud, or anything else builds up on the camera lens. Clean the lens, rinse it with water, and wipe it with a soft cloth. The back of the vehicle is in an accident. The position and mounting angle of the camera can change or the camera can be affected. Be sure to have the camera and its position and mounting angle checked at your dealer. Fuel Use of the recommended fuel is an important part of the proper maintenance of this vehicle. To help keep the engine clean and maintain optimum vehicle performance, we recommend the use of gasoline advertised as TOP TIER Detergent Gasoline. Look for the TOP TIER label on the fuel pump to ensure gasoline meets enhanced detergency standards developed by auto companies. A list of marketers providing TOP TIER Detergent Gasoline can be found at www.toptiergas.com. TOP TIER gasoline is only available in the U.S. and Canada. The RVC is turned off. See "Turning the Rear Camera System On or Off" earlier in this section. It is dark. The sun or the beam of headlamps are shining directly into the camera lens. . .