What to Turn On for Defogging in Rainy Weather?

[LeAlexa]

For defogging in rainy weather, you can turn on the external circulation defogging. There are two methods for car defogging: 1. Roll down the windows: Allow air convection by slightly rolling down some windows to let the cold outside air blow into the car, achieving convection between hot and cold air, thereby reducing the temperature difference inside and outside the car to eliminate frost and fog. If the weather is particularly cold, you can intermittently open and close the windows; 2. Use the air conditioning defogging system: Adjust the "air outlet mode" to "defogging," which mainly controls the warm air to ventilate towards the windshield, the front windows near the rearview mirrors of the driver and passenger seats.

[DeEloise]

Fogging on car windows is a common issue on rainy days, directly affecting driving safety. I've found the best solution is to press the windshield defogger button as soon as you get in the car - it usually has a fan or wind-shaped icon. This automatically activates the AC compressor and fan, setting it to external circulation mode. The air conditioning quickly dehumidifies and clears the fog, especially when you increase the fan speed for faster results. If your car lacks automatic defogging, manually turn on the AC button, adjust the vents to point at the windshield, and activate external circulation. Remember, avoid prolonged use of internal circulation during rain as it increases humidity. Additionally, using wipers helps maintain clear visibility, and turning off the AC before parking saves energy. Safety first - promptly addressing window fogging ensures worry-free driving.

[OSophie]

As someone who drives frequently, I use the simplest method for defogging in the rain: just press the defogging icon on the AC panel, which automatically configures the AC and fan speed, setting it to external air circulation blowing towards the windshield. If there's no automatic function, I immediately turn on the AC, increase the fan speed, and direct the airflow to the windshield area. I've found that setting the temperature cooler works better when the fog is heavy, and switching to warm air after the fog clears saves energy. External air circulation is crucial because it introduces dry outside air more quickly. Cracking the window slightly can be useful when parked, but it's best to avoid it while driving in the rain. Making it a habit to set up defogging as soon as you get in the car can make your journey smoother and more effortless.

[AniyahAnn]

The key to defogging in rainy weather is to quickly reduce the humidity inside the car. The most important step is to turn on the AC button to activate the compressor for dehumidification. Then set the air direction to blow directly at the windshield and use the external circulation mode to allow dry air to flow. Avoid using the internal circulation mode for too long as it increases moisture accumulation. It's recommended to increase the fan speed to accelerate defogging. If fogging recurs, the temperature setting might be too low—try adjusting the warm air to balance the temperature difference. Safe operation involves restoring normal settings only after the fog has completely dissipated.

[Patricia]

As a frequent driver, my approach to defogging in rainy conditions is straightforward: when fog appears, I simply press the defog button on the control panel—it usually automatically activates all necessary settings including the AC and external air circulation. If there's no dedicated button, I turn on the AC, set the fan speed to medium or high, direct the airflow straight at the windshield, and engage the external circulation. This clears the fog within seconds. I also prefer to ventilate the car by opening windows before parking to prevent heavy fogging, though this is challenging in the rain, so I prioritize using the AC system. Regularly checking and maintaining the AC filter to ensure good airflow is also quite helpful.

[MacCalvin]

For defogging, balance effectiveness and energy efficiency. Activate defogging mode or manually turn on AC with external air circulation directed at the windshield as soon as fog appears—it quickly removes moisture and clears fog efficiently. After clearing, I recommend switching back to normal settings and turning off AC to save energy since continuous dehumidification is unnecessary. External air circulation is more reliable and safer than opening windows in rain to avoid water ingress. Develop the habit of briefly using AC to prevent recurring fog, reducing resource waste—eco-friendly and practical.