Is it normal to have fog inside your headlights? Is it normal to do if there is fog in the headlight

Normal.

Because the headlights are a thermal light source, the temperature in the lamp cavity will rise after the lights are turned on, and the temperature will drop soon after the lights are turned off, because the temperature changes greatly and the water vapor is large.

It will condense on the lamp cover of the car, forming a water mist. At this time, you can drive the vehicle to a warm place, you can also turn on the lights and use the heat of the lights to dry the fog inside the headlights, or you can place desiccant inside the headlights.

It can solve the problem of fogging of headlights.

If there is too much fog in the headlights and there is already water accumulation, it may be that the headlights are leaking or seeping, and it may be the car headlights caused by the lack of tight sealing of the headlights.

Water ingress inside or a crack in the lampshade of the headlight. It is necessary to go to the 4S shop for maintenance in time to avoid a short circuit in the lamp due to water ingress and affect the circuit of the entire car.

The headlights and rear taillights of the car are not designed to be airtight. Although when the lights are installed, the lampshade is surrounded by a sealing ring.

Waterproof, but each light will be breathable. This effectively allows the air to flow to cool the headlights and adjust the air pressure balance inside and outside the lights. It plays a role in protecting the light bulb.

Therefore, it is normal for there to be fog in the headlights. Yes, there is no special management. Under normal circumstances, shortly after the car restarts, the car's fog is evaporated by the rise in engine heat and sunlight; With the headlights on, the fog from the headlights will quickly evaporate.

It is normal to have fog in the headlights in winter, which is the same as why there is a haze in the eye lenses in the house in winter, and why there is water mist in the breathing headlights when it is cold? Because it has an air intake hole and an exhaust hole, the function is to equalize the air temperature in the headlights when they are lit, so that the hot air can be exhausted and the cold air can be sucked in.

Abnormal. leads to car headlights.

There are several reasons for the appearance of fog:

The vents of the headlights are clogged.

When the vent of our headlamp is blocked, the air can not circulate normally, the speed of natural water evaporation will be slowed down, and the blockage of the vent is not conducive to the release of pressure generated by high temperature in the lamp cavity, and the long time will accelerate the aging of the lampshade and cause our lampshade to burst.

Safety hazards: the speed of the vehicle on the road is very fast, sometimes it is inevitable that the flying stones or foreign objects hit the headlights, sometimes we just roughly observe the surface of the headlights, there is no problem, but if there are small cracks in the lampshade, it will also cause the headlights to be sealed poorly and the headlights to enter the water.

It is not normal for the lights to have fog, the solution is: go to the 4S shop to disassemble and repair, you need to disassemble the headlights and open the lampshade, check whether the headlights are damaged or leaking after drying, and if you do not find any abnormalities, you need to replace the hardware equipment such as the headlight back cover sealing strip and snorkel, and the headlights need to be replaced if the water is serious.

If it is only slightly fogged, it is normal, and for xenon headlights, it is easier to fog up in winter. Because xenon headlights are a thermal light source, when the lights are turned on for a period of time, the temperature in the lamp cavity will be relatively high, and the temperature difference between the inside and outside will become larger after the lights are turned off, so that the water mist will condense in the lamp cavity. This is actually the same principle as when we drive in the winter when there is water mist in the car.

However, if the headlights are waterlogged, then it is a quality problem, and you need to find a 4S store as soon as possible to deal with it.

If it is a slight water mist, then it is not a quality problem. Since the working temperature of the hernia lamp can reach more than 300 degrees, the gas in the headlamp expands and cools down, which will produce an air pressure difference, which adsorbs external water vapor into the headlight of the car, forming the water mist we see. This slight mist can be done by turning on the headlights and drying the fog inside the headlights with the heat of the lights.

You can also put a few more drying packs inside the headlights, so that the headlights are not easy to fog up.

If the vehicle is still under warranty, you can ask the 4S shop to replace it, because the headlights are not consumables like tires and oil, and the water mist in the headlights of the new car must be a quality problem. There is a ventilation and heat exhaust rubber tube at the back cover of the headlight structure, if the rubber tube is not properly sealed, water droplets will appear, and in serious cases, there will be water accumulation in the headlight. This problem is most likely to occur during the winter and rainy seasons.

If the headlights are slightly fogged, you can adjust the height of the lights, so as not to affect the use, drive the car to 10 meters away from the wall, and measure the distance from the low beam of the car to the central axis, the distance from the high beam to the central axis and the distance from the low beam to the ground; Then move to the wall and make the corresponding marks on the wall; Then observe whether the light line is offset left and right or too high and too low, if the headlight center is not aligned with the marking point, it indicates that there is an offset, which can be adjusted by rotating the headlight width adjustment knob, and the headlight center can be aligned with the mark on the wall.

Normal. Because sometimes the outside temperature is relatively cold, the light will heat up when it is on, which may liquefy the water vapor in the air and produce some fog.

It is very normal that there will be fog in winter because the temperature in winter is very low.

It is very normal, the weather is particularly cold in winter, and the temperature is also very low, so it is normal for fog to appear, and you can choose to warm up.

It is normal for there to be fog in the headlights, and this phenomenon is also common.

The headlights will generate heat when working, after turning off the headlights, the inside of the headlights is still relatively hot, and there is a special heat dissipation outlet behind the headlights, at this time, the moisture or cold air in the air will form a water mist when it enters the headlights. The next time you drive, turn on the headlights for about ten minutes and the water mist will disappear. If the water mist does not disappear after a long time when you turn on the headlights next time you drive, it means that there is a problem with the headlight sealing and the headlights are flooded.

It is also a normal phenomenon for headlights to enter water, and with the increase of use time, the seams of the shell of the headlights will age, and the headlights will enter the water. It is also relatively simple to solve the water ingress of the headlights, detect the water ingress, and then repair or strengthen the sealing measures.

When there is fog in the headlights, turn on the headlights for more than ten minutes and then observe the shed, if there is no fog, then the headlights have no water inlet and there is no problem. If it is turned on for a long time and there is fog, then the headlights are flooded.

Usually in the process of using headlights, it is normal for fog to be generated in the headlights, as long as it is accurate to judge whether the beam and slowing off are caused by normal fog or water ingress. If there is fog in the headlights due to water ingress, you need to go to the repair shop for inspection and repair. When replacing the headlight bulb, the headlight shell must be sealed after the replacement is completed to prevent the headlight from entering the water.

When the headlights of a car are turned on, a lot of heat is generated, and the air inside the lampshade will become hot. When the lights are turned off, especially at night, the inside of the headlights will turn from hot to cold, and the water vapor in the air body will adhere to the lampshade, forming fog.

The car headlights are semi-sealed structure design, and the shell of the headlight lampshade is sealed, but there is a dust-proof vent on the headlight assembly. When it's hot, or the sun is shining, or the lights are on for a while, the fog will evaporate and go out through the vents.

There is also an anomaly in foggy days with headlights, that is, the headlights are flooded. This is a case where the amount of water inflow is relatively large. Some lamps are poorly sealed and incomplete.

When the lights are working, they generate a lot of heat. As a result, the increase in the temperature inside the lamp leads to an increase in the air pressure inside the lampshade, opening up gaps that are not tightly sealed, and rainwater flows down these gaps into the lampshade. When washing a car, there may be some water that enters the interior of the car lights through the gaps, and the water will atomize when heated.

If there are too many water droplets or water vapor inside the headlight, water droplets can be seen, which is not normal and indicates that the headlight is not tightly sealed.

After the headlights are turned on, a lot of heat will be generated, and the air inside the lampshade will become hot, and when the engine is turned off and stopped, especially at night, the inside of the headlights will be hot to cold, and the water vapor in the air will be attached to the lampshade to form a fog.

The headlights are semi-sealed, and the headlight cover shells are sealed, but there is a vent on the headlight assembly to prevent dust. When the weather is hot, or the sun is shining, or the lights are turned on for a period of time, the fog will evaporate and go out of the exhaust hole.

There is also an abnormal situation where the headlights are fogged, that is, the headlights are flooded. This is the situation that the water inlet is relatively large, some lamps have a bad sealing effect, not completely sealed, and the lamps will produce a lot of heat when they are working, so the internal temperature of the lamp will rise and the air pressure in the lampshade will rise, and the gaps that are not tightly sealed will be opened, and the rainwater will flow into the lampshade along these gaps. When washing the car, there may also be some water entering the inside of the car light through the cracks, and the water will atomize when it encounters heat.

If there are a lot of water droplets or water vapor in the headlamp, you can see the droplets, which is abnormal, indicating that the headlight is not tightly sealed. (Photo by Wu Binbin, Pacific Automobile Network).

It is normal for the headlights to have fog, because there is a snorkel on the back cover of the headlights, which is mainly used for heat dissipation, and the heat generated when the lights are turned on is discharged from the snorkel, but sometimes there is moisture into the snorkel, resulting in fog front change gas in the headlights.

The moisture in the air enters the headlamp through the snorkel and adheres to the lampshade, and as the moisture accumulates, the silver water droplets flow down the lampshade. This is mostly due to large temperature differences, which are most likely to occur in winter and rainy seasons. After the lights are turned on for a period of time, the fog will be exhausted with the hot air through the vent pipe, which will basically not damage the headlights and electrical circuits.

In this case, the driver should not act rashly, and never bake the headlights, which can easily damage the headlights. Because the headlights are made of plastic, the extra heat can easily bake the shades, and most of the damage is irreparable. In addition to weather changes, human factors can also make car lights become "teary eyes", such as vehicle wading, car washing, etc.

When the vehicle is involved in Zhengshui, because the engine and exhaust system itself are relatively large heat sources, rainwater will form a large amount of water vapor on it, and along the ventilation pipe, part of the water vapor will enter the headlights.

Photo by Ling Xiufang of Pacific Automobile Network).

There is still no problem with a small area of water mist, if there is water accumulation, then it is necessary to check whether there is a dust race or a problem with the headlight sealing.