How to Repair a Fog Light Lens on an Audi A8

1. Park the Audi 8 on a flat, level surface and apply the parking brake. Use a clean rag soaked in soapy water and wash the fog light lens thoroughly. If there are any large pieces of tar or road grime stuck to the lens, use a plastic kitchen knife or putty knife to scrape off this material.
2. Dip a second rag into some denatured alcohol and rub it onto the lens. The alcohol will help to break down any yellowing or cloudiness on the lens. Wait two minutes for lens to completely dry before continuing.
3. Soak a piece of 800-grit wet/dry sandpaper in clean water. Gently sand the lens using short circular strokes to eliminate any larger scratches or chips in the lens. After about one minute, start using a 1000-grit paper to smooth out the lens. Finally, end with the 1500-grit to give a clean translucent finish. Make sure all sandpaper stays wet throughout the process.
4. Dab the corner of a third clean rag into some regular car wax. Apply the wax to the fog light lens by rubbing it into the lens for 30 seconds. Let dry for one minute and then buff the lens with a clean corner of the rag.