I believe many car enthusiasts have
Have you ever encountered headlights that “fogged up”?
Headlights fog up, more or less
Will have some impact on lighting
Let me share it with you today
Related knowledge points about headlight fogging
Let's have fun together
How much impact does fogging on car lights have on brightness?
The fog in the lampshade will seriously affect the normal light transmittance, and even cause the direction of the car light beam to shift, causing astigmatism. Scattered light has no penetrating power and will increase the risk of traveling in rainy days.
Why do car lights fog up?
1. Large temperature difference
Car headlights usually have a ventilated rubber tube on the back cover to dissipate heat. Due to the presence of TA, moisture in the air has the opportunity to adhere to the inner surface of the lampshade to form water mist. In other words, when the temperature difference is large, the occurrence of fog is normal.
2. Normal water intrusion phenomenon
In addition to the temperature difference, if the vehicle does not thoroughly dry or drain the water after wading, washing the car, or cleaning the engine compartment, it is possible for moisture to enter the headlights through the rubber tube. As long as there is no accumulation of water, it is normal.
3. Water entering due to sealing problem
However, if the amount of water in the headlight obviously exceeds the standard and forms water accumulation, it can basically be determined that there is a problem with the headlight seal. Either the headlight cover or the back cover is damaged, or there is a problem with the sealing strip between the light cover and the back cover.
What should I do if my car lights fog up?
If water vapor is only formed on the bottom of the headlight but the top is still clean, then it is generally fogging normally. It is recommended to put some desiccant and turn on the headlight frequently to dry the water vapor inside by turning on the light. It will usually dissipate in about a week. .
If the water accumulation inside the headlight is serious, it is necessary to disassemble it and open the lamp cover. After drying, check whether the surface of the headlight is damaged or may leak. If no abnormality is found, it is recommended to replace the headlight. Back cover seal and breather pipe.
In winter and rainy seasons, it is recommended to develop the habit of regularly checking vehicle lights, especially after the vehicle has been waded into water. Eliminating faults in time is the best way to maintain your car.
