Headlamp water mist is generally a normal phenomenon. Because under the irradiation of the lamp, the inner surface of the lampshade will form a temperature difference, resulting in condensation water fog. Usually, turn on the headlights for about an hour will automatically disperse, do not affect the normal use.

But it is important to be noted that if there is still a lot of water mist in the headlights in the middle of a child, it is important to consider that there may be water inside the headlights. In this case, it is necessary to go to the 4S store to check the sealing and desiccant of the headlight in time to prevent the headlight failure or insufficient irradiation due to water, which affects the driving safety.

 Extension of the principle knowledge of automobile headlights:

1. Whether it is ordinary halogen headlights, or argon headlights, or headlights with LED lights set, there is a ventilation rubber tube in the rear cover position.

2. At the moment when the headlights are lit and even when the headlights are used, a lot of heat will be generated. The function of the ventilator is to discharge the heat as much as possible, so as to maintain the normal working temperature of the headlights and ensure the stable use of the headlights.

3. The water in the air will enter the headlights through the ventilator pipe and attach it to the lampshade. As the water vapor gathers, the drops will flow down the lampshade.

4. This situation is mostly caused by large temperature differences, which are most common in winter and rain-prone seasons.