Drivers need to use dry air to remove fog quickly in their cars. When the air conditioner compressor is running, it will have dehumidification effect. The air cooled by the compressor will become dry, and then heated by the warm air tank, and the air sent into the cabin will become dry and hot. Dry warm air will blow on the front windshield, which can achieve the effect of defogging.
Toyota Corolla should press the AC switch again and turn off the AC switch indicator light. It is not advisable to turn on the warm air immediately after the car starts, wait for about 3-5 minutes, and then turn on the warm air when the water temperature rises to normal temperature, that is, when the water temperature rises to the middle.
Of course, there is no need to turn on the air conditioner for refrigeration (that is, the indicator light of the air conditioner switch is not on), because the warm air is generated by the thermal cycle of the car itself, so it will not cost oil. Setting the circulation mode of the air conditioner to the internal circulation mode is helpful for the indoor temperature to rise rapidly, and then switching the external circulation as needed is helpful for the indoor air circulation. When the engine is working, incomplete fuel combustion will produce high concentration of carbon monoxide.