What to Do When Car Headlights Turn Yellow?
2 Answers
Solutions for yellowing car headlight covers are as follows: 1. Clean with soapy water. 2. Polish with very fine sandpaper and then buff. 3. If the yellowing is severe, replace them directly. Maintenance tips for car headlights are as follows: 1. Regularly check the headlight covers to avoid water droplets: Sometimes, after washing the car, there may be water vapor inside the headlight covers, indicating a problem with the seal. It is important to have it inspected and repaired at a repair shop promptly to avoid prolonged damage to the bulbs, especially to prevent short circuits. 2. Replace headlights periodically: Generally, after driving 50,000 kilometers or about 2 years, the brightness of the headlight bulbs will diminish. 3. Protect headlights from impact by foreign objects: Headlights are relatively fragile, so extra care should be taken while driving to avoid hitting or scratching them. Any scratches can affect the light transmission and brightness of the headlights. Car headlights, also known as car front lights, serve as the eyes of the car. They not only relate to the external image of the car owner but are also closely linked to safe driving at night or in bad weather conditions.
When my old car's headlight covers turned yellow, I fixed them myself with a restoration kit. This yellowing mainly happens because the plastic covers oxidize from prolonged UV exposure, just like eyeglass lenses fog up over time. First, I used 800-grit sandpaper with water to sand off the yellow spots, then refined it with 2000-grit sandpaper to eliminate scratches. Finally, I applied a specialized restoration solution to make the covers clear again. Parking in the shade when possible and regularly cleaning off bug splatter and tree sap from the covers can slow down yellowing. If the covers are too thin, it's better to just spend 200 bucks on new ones instead of DIY repairs.
