How to Deal with Fogging on the Outside of the Car Windshield on Rainy Days?
4 Answers
There are several solutions to deal with fogging on the outside of the car windshield on rainy days, which are as follows: 1. First, adjust the air vents to the front windshield, turn on the air conditioning cooling function, and use the external circulation mode. With the maximum fan speed, it usually takes only about ten seconds to quickly "blow" away the fog on the glass. 2. Use the external circulation mode for defogging. However, this method is not as fast and may take some time. It is not suitable when the external environment is poor, such as when there is a lot of dust. For effective defogging with external circulation, the correct vent position should be set to blow both the front windshield and the footwell, or only the front windshield. Additional tips for driving on rainy days: 1. Turn on the windshield wipers when driving in the rain. Adjust the wiper speed according to the intensity of the rain. Some cars have an automatic adjustment feature. 2. If the weather is gloomy with thick clouds and poor visibility, turn on the driving lights. 3. Reduce speed when driving in the rain, as heavy rain can cause hydroplaning. Although this phenomenon is not common, it is important to be cautious, especially during heavy rainfall and when turning. Always slow down in advance and pay attention to deceleration.
I've encountered the issue of fogging on the outside of the windshield many times while driving in rainy weather. The most straightforward solution is to turn on the wipers and give it a few swipes—it clears up immediately. But don't stop there, because the fog can easily come back. At this point, you need to adjust the air conditioning system. I prefer to lower the temperature, as cold air works faster than warm air. Also, make sure the vents aren't blowing directly onto the windshield—adjust them to blow toward your chest or feet for better results. Remember to press the defog button in advance; it automatically increases the airflow and adjusts the direction. A crucial point: never wipe the fog with your hand while driving—it's too dangerous. Finally, a small tip: before parking, turn off the AC and open the windows for a few minutes to balance the temperature and humidity inside and outside the car. This can effectively prevent fogging next time.
The principle of fogging is quite simple. When it rains, the outside of the car is cold while the inside is warm, and the large temperature difference causes condensation on the outer surface of the glass. My three-step driving operation is as follows: First, I instinctively press the wiper switch to quickly remove the first layer of fog. Then, I lower the air conditioning temperature by two or three degrees, with the key being to change the air vent mode from defrosting the windshield to directing air toward the body or legs. If time allows, turning on the defogging function ten minutes in advance is the most hassle-free. Additionally, it's important to pay attention to the humidity difference inside and outside the car—cracking the window slightly or using the external air circulation can help. Also, remember to regularly check the condition of the wiper blades; aged or hardened blades can leave water streaks when wiping, which can impair visibility. These small adjustments can make driving safer and more comfortable.
Safety always comes first! Once I notice fogging on the outside of the windshield, I immediately do three things: activate the wipers to clear visibility obstacles, press the defog button to automatically adjust the air conditioning system, and reduce my speed. It's especially important not to let the air conditioning blow directly onto the glass, as this can cause more fogging. I always keep defogging spray in my car, which is particularly useful for emergency situations. The habit of turning off the air conditioning and opening the windows for ventilation before parking is also crucial, as it significantly reduces the chance of fogging. Most importantly, I never wipe the glass with my hand while driving, as the distraction is too dangerous. Making these actions habitual ensures I stay calm while driving in the rain.
