It is normal for newly replaced headlights to fog up, so don’t worry too much. After the car lights are turned on for a period of time, the mist will be discharged out of the lights through the rubber vent pipe behind the lights along with the hot air, which will basically not cause damage to the headlights and circuits.

　　If there is slight fog in the headlights, you can solve it by turning on the headlights and baking them. The fog will gradually evaporate when heated. If the fog in the headlights is heavy or water has entered, you can drive the vehicle to a sunny place and use the ultraviolet heat of the sun to slowly evaporate the fog in the headlights.

　　The principle of headlight fogging is that there is a rubber vent pipe behind the headlight of all models now. The heat generated by the headlight when it is lit or when driving normally is transported to the outside through this pipe. However, the existence of this tube also allows moisture in the air to enter the interior of the headlight, which will form fog over a long period of time. Fogging of headlights generally occurs in areas with heavy rain or high humidity, winter or rainy months. This is because the temperature difference between the inside and outside of the headlights is high at these times, just like walking into a warm room while wearing glasses. When indoors, the lenses will appear foggy.

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