Many car owners often find that after entering autumn and winter, the headlights will fog up and condense a lot of water droplets, which will disappear or worsen after using the car for a period of time. Car owners can easily think of special terms like water intrusion and fogging.
It is actually normal for the car lights to fog up, but water intrusion is a more dangerous situation. However, many car owners have difficulty distinguishing whether the headlights are filled with water or fogging. They often assume that water has entered as soon as they see water droplets. Today, let’s talk about how to distinguish between foggy headlights and water in the headlights! And the solution!
Headlight fogging: The condition for headlight fogging is that the air humidity reaches a relatively high value, causing water vapor in the air to condense in the headlights. After the fog inside the car lights appears, it will take 1~1.5h to completely eliminate the fog when the lights are on; in the static state, the fog inside the car lights can be automatically eliminated after being stored in a dry environment with humidity <50% for 24~36h. Completely eliminate this phenomenon as fogging. To put it simply, the reason why the headlights fog up is due to the humidity of the air. This is normal!
So why is there water mist in the headlights when it's cold? Because the headlight assembly is a relatively sealed environment, but it has an air inlet and an exhaust hole. The function is to allow the hot and cold air to interact when the headlight is lit, balancing the air temperature inside the headlight. ( There is a filter sponge inside each hole) When the outside air is humid, it is sucked into the car lights, and the hot air is discharged. If you turn off the lights, the temperature inside the car lights is low, and the moist air condenses into Water mist clings to car lights. This is why you find fog in your headlights.
If it is a car with modified headlights, before the xenon lights were changed, the headlights were halogen, with 55W of high power and high temperature, and the water mist inside was gone as soon as it was baked! Now the xenon lamp has been changed to 35W, and all the temperature is concentrated right in front of the lens. The water mist will take a long time to disappear! Dear car owners, this is a normal physical phenomenon.
There is a difference between headlight fogging and water damage. Water intrusion is caused by poor sealing, which causes water to accumulate inside the lamp and cannot be eliminated. If a large area of fog condenses on the inner wall of the lens and condenses into water droplets and flows down, it accumulates inside the car light. When the car light is used for a long time and many times, as the temperature rises, the fog will accumulate on a large area on the inner surface of the light distribution mirror. , this phenomenon should be judged as water intrusion.
How to solve the problem of water entering the car light? Find the air leak, seal it with glue, or re-seal it. Snake glue should be of high quality. If the air outlet is blocked, open it. If it is not enough, you can open an extra air outlet. The air outlet should have a sponge. The nice thing is the curved air outlet.
Summary: You are not afraid of fogging in car headlights. What you are afraid of is water getting into the car headlights. Once water gets in, it will seriously affect the lighting effect of the headlights and make driving unsafe. If your car's headlights are flooded, go to a local modification shop or repair shop to solve the headlight problem in time to make driving safer!
