After entering winter, many car owners will find that their car headlights will fog up and condense a lot of water droplets. In fact, this is a normal phenomenon, because there is a vent pipe on the back cover of the car headlights, which is mainly used for heat dissipation. The heat generated when turning on the lights is discharged from the breather tube, but sometimes moisture also enters the breather tube, causing fog in the lights. But sometimes the car headlights are not tightly sealed and water enters. So how should we distinguish between water intrusion and fogging of car headlights in actual use? Below I will give you a more intuitive comparison of the differences and how to deal with them.
How to deal with headlight fogging
In this case, you don't have to worry too much. 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. This will basically not damage the headlights and electrical circuits.
In this case, friends should not act rashly. For example, never bake the headlights. Doing so can easily damage the headlights, because the outer surfaces of the headlights are made of plastic material, and the extra heat can easily bake the lampshades. For more content, please follow xsjiaoliu, you will know all about cars! Most of this damage is irreparable.
In addition, in addition to weather changes, human factors can also cause water to enter the car lights, such as vehicle wading, car washing, etc.
When a vehicle is wading through water, since the engine and exhaust system themselves are relatively large heat sources, rainwater will form a large amount of water vapor on them. Some of the water vapor will enter the headlights along the breather pipe.
Car washing is more straightforward. Some car owners like to use a high-pressure water gun to wash the engine compartment and watch the mud and leaves being knocked back one by one by the high-pressure water gun in their hands. After flushing, the water vapor in the engine compartment is not dealt with in time. After the engine compartment cover is closed, the water vapor cannot be quickly dispersed outside the car, and the moisture trapped in the engine compartment may enter the headlights.
For cleaning work in the engine compartment, we should wipe it with cotton or cloth, or use high-pressure air blowing to avoid "moisture" in the engine part as much as possible.
