I believe many car owners have encountered water mist entering the car headlights, and they thought, aren’t the car headlights sealed? Why does water mist enter? What should I do if my headlights get wet? How to deal with it? Let’s take a look at it together.
In fact, it is normal for car headlights to get water mist, and car owners don’t need to worry too much. We all know that a large amount of heat is generated from the moment the headlights are turned on until the headlights are used. There will be a ventilation rubber tube on the back cover of the headlight. The function of this rubber tube is to discharge the heat generated after the headlight is turned on. However, moisture in the air will enter the headlight through it and adhere to the headlight. On the lampshade, as water vapor gathers, water droplets form and then flow down the lampshade. Generally, this situation occurs when the temperature difference is relatively large, and this situation often occurs in winter and seasons with more rain.
When you encounter water mist in your car headlights, the best way is to turn on the headlights. Usually, after the car lights are turned on for a period of time, the mist will be discharged out of the lights through the vent pipe along with the hot air, without causing damage to the headlights and circuits. If the car owner has a high-pressure air gun or a hair dryer, adjust it to the cold wind setting, and at the same time blow on the areas in the engine compartment that are prone to moisture accumulation to speed up the air flow and take away the moisture.
Some car owners asked, if they encounter this situation, can they use a dryer to bake the surface of the headlights? This is definitely not possible, because the headlight shades of most current models are made of special plastic. If the baking temperature is too high, it will easily cause the headlights to age and turn yellow, or even crack when exposed to cold.
Note that the above situations are all about water mist entering the car headlights. If there is a large amount of water in the headlights, then there is basically a problem with the headlight seal. The solution is to remove the headlight assembly and carefully check whether the internal parts are damaged. If there is damage, the headlight can only be replaced. It is worth mentioning that the 4S store does not provide separate replacement of the lampshade. The assembly must be replaced, so the price is relatively expensive. If the car owner feels that it is not necessary, he can purchase the lampshade of the same model online and then go to an outside auto repair shop to replace it. It is still difficult to replace it by yourself.
