There have been a lot of rainy days recently, so some readers told the editor: My car has halogen headlights, why is there water vapor inside? If this happens, do I need to replace the headlights? However, some car owners will experience similar phenomena after washing their cars. What is the cause of this? Is there any way we can solve this kind of problem? Regarding this issue, I would like to share some knowledge with you today, hoping it will be helpful to some novice car owners.
In fact, the principle is very simple. Regardless of whether your car has halogen headlights or not, it is normal for fog to appear in the headlights. Why do you say this? Because when the car is 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, which will not actually damage the headlights and electrical circuits. However, there will be a special heat dissipation outlet near the headlight, but under normal circumstances, the water vapor will slowly cool down only after the headlight is turned off. At this time, the moisture in the air will form fog when it is cold, and it will also It will remain on the surface of the headlight, but will slowly disappear again.
There is another situation where vehicles are wading in water and the water mist generated after washing the car. When the vehicle is wading in water, the engine and exhaust system themselves have relatively large heat, and rain will form a large amount of heat on them. Water vapor passes through the exhaust pipe, and some water vapor will enter the headlight. This is even more obvious when washing a car, because many car wash shop clerks like to use high-pressure water guns to flush the engine compartment. After flushing, the water in the engine compartment is not dealt with in time. After closing the engine compartment cover, As a result, the water vapor cannot dissipate quickly, and eventually becomes stuffy in the engine compartment. Some of the water vapor will enter the headlights, forming a water mist phenomenon.
But under normal circumstances, if you drive for about 10 to 15 minutes, the water vapor in the headlights will be driven away after the car has warmed up. This is also a normal phenomenon, but if you drive for 15 to 30 minutes, the water vapor in the headlights will be driven away. If there is still so much water vapor after that, it proves that your headlights are indeed filled with water. At that time, it is estimated that some repairs will be required, which may seriously affect the safety of driving. But under normal circumstances, most of the water accumulation in the car lights occurs in old cars, because the sealant will age over time. Of course, it is not ruled out that some new cars will also have this situation. This is often due to the Quality problems are caused by insufficient sealing, so car owners must pay attention to this kind of phenomenon when buying cars.
If you want to know more about cars, please follow the editor, support, comment and like (^_^)!
