What are the methods for repairing scratches on car lights?

[Gordon]

The methods for repairing scratches on car lights are: 1. Polish with scratch wax; 2. Grind with toothpaste, then use a clean towel to rub in a circular motion. The functions of car lights are: 1. Turn on the turn signal to alert following vehicles and reduce rear-end collisions; 2. Improve visibility of road conditions and enhance driving safety; 3. Inform vehicles behind that you are braking and to slow down; 4. Turn on hazard lights during temporary parking, emergencies, or poor visibility due to bad weather to alert passing vehicles. The maintenance methods for car lights are: 1. Regularly check the lamp cover to avoid water droplets; 2. Replace car lights periodically; 3. Adjust the height of the lights properly; 4. Use high-quality bulbs when replacing car lights; 5. Prevent foreign objects from hitting the car lights.

[Justin]

I've also encountered scratches on car headlights before, so don't rush to replace them right away. For minor surface scratches, you can try using toothpaste. Apply it to a soft cloth and polish repeatedly to remove them, similar to how you'd treat scratches on a phone screen. If the effect isn't noticeable, head to an auto parts store and buy a specialized headlight restoration kit. Follow the instructions to polish and then apply an anti-UV coating—it takes about 20 minutes to complete. For deeper scratches, it's best to use a professional polishing machine, but if you're handy, you can buy a set of sandpaper and gradually polish from coarse to fine grit, then fill the grooves with resin. When parking, keep your car away from branches and walls, and avoid using hard-bristle brushes on the headlight covers when washing. Regularly applying car wax can help prevent new scratches. After restoration, check the light transmission rate. If the scratches are too severe, it's safer to replace the headlight cover.

[DiDominic]

The key to repairing headlight scratches lies in their depth. For fine scratches, the solution is simple—just grab a tube of white toothpaste from the supermarket. Apply it, then vigorously rub in circular motions for ten minutes. After cleaning, they'll look as good as new, costing less than five yuan. Moderate scratches require a headlight restoration kit: first, wet-sand the scratched area with water and sandpaper, apply the restoration liquid, let it sit for two hours, then seal it with a protectant. This method works especially well for plastic lens covers, but avoid doing it during high engine temperatures. For deep, penetrating scratches, DIY repairs may affect light transmission, making nighttime driving unsafe. I recommend visiting a professional shop for resin curing with a heat lamp, which costs around 300-400 yuan. After repair, don’t forget to apply a waterproof and anti-fog spray for added peace of mind during rainy or foggy weather.

[Sá]

Here's a practical approach to dealing with headlight scratches. For minor scratches, use a cotton cloth dipped in baking soda paste and rub repeatedly for three minutes for immediate results. For medium-depth scratches, it's recommended to use a professional repair kit, focusing on preparing a set of 800-3000 grit wet sandpaper. Start with coarse sanding followed by fine sanding, and apply resin to cover the surrounding paint. Remember to thoroughly clean the headlight cover before starting, as dust particles can cause more scratches. After repair, test the light beam distribution; severely deformed ones may need replacement. For daily maintenance, you can wax the headlights separately during car washing, and avoid using carburetor cleaner on the headlight cover, as such solvents can accelerate aging and cracking.