Defog

The A/C compressor turns on when the ambient temperature is above 4°C (39°F) and runs to keep the evaporator core at about 3°C (37°F).

The blower pulls air into the system. The air is cooled and dehumidified. The adjusted air is heated as necessary. The floor and windshield defroster outlets deliver the heated air. The Instrument Panel Integration Module (IPM) determines the proper air discharge and positions the temperature valve accordingly. The floor outlets deliver a small amount of heated air.