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Which circulation mode should be turned on for defogging in rainy weather?

1 Answers

DiKingston

09/03/25 8:37am

Whether to use the internal or external circulation mode for defogging on rainy days depends on the specific situation. In summer, use the air conditioning for defogging with the internal circulation mode to reduce air humidity. In winter, use the warm air for defogging. The driver can first use the external circulation mode to reduce the temperature difference between the inside and outside of the car, wait a few minutes, and then switch to the internal circulation mode. Method for defogging with air conditioning in summer: The driver can first press the A/C switch button, then turn on the front windshield defogging button, set the temperature to the lowest, and adjust the air volume. After a while, the fog on the front windshield will be eliminated. If fog is found on the rear windshield and side mirrors, the rear window heating button can also be turned on while defogging the front windshield to eliminate the fog on the glass. Method for defogging with warm air in winter: If the car has just been started, do not turn on the air conditioning immediately. Wait a few minutes for the engine to warm up. When the water temperature reaches a certain level, turn on the warm air, set the air volume to the maximum, and then turn on the front window defogging button. After a while, the fog on the front windshield will be eliminated. This method is also applicable to fogging on the outside of the glass in summer.

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