Why does the halogen light cover turn yellow?

1 Answers
LaDominic
07/25/25 7:43am
The yellowing of the light cover is not due to oxidation, but rather because the material batch number or specification of the selected yellowing cover does not meet the requirements for UV resistance. Here are some repair methods: Mirror Restoration In daily maintenance, you can wash the headlights with soap and water every three months to prevent the accumulation of dirt and avoid yellowing. After cleaning, polish the headlights with a chemically synthesized polishing agent and follow the procedure to wax and protect them. When the car is not in use, park it in a garage or a shaded area. This will help reduce the oxidation of polycarbonate caused by UV exposure to the headlights. Replacing the Headlight Assembly The daytime running light design of this car has a defect. The LED is too close to the light guide strip, and the high temperature of the LED causes the end of the light guide strip to melt. You can go to a 4S shop to replace the car assembly.
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