Auto Defog Actuator
WARNING: This page is about a different car, the 2021 Hyundai Kona. However, it is still accessible from the selected car via links, so may be relevant.
The Auto Defog System monitors the humidity inside a vehicle with a sensor installed at the front glass. It curb and eliminate the moisture at in advance to improve visibility and convenience of driving.
A driver can predetermine the threshold value of in-car temperature and wind. Then the system will automatically activate defogging if the moisture on the front window surface exceeds the specified level. If the humidity drops, it will be turned off and go back to the predetermined setting. The system controls the intake actuator, A/C, auto defog actuator (Auxiliary DEF actuator), blower motor, and mode actuator according to the humidity of the surface.