To defog inside windshield
1. Select any fan speed except "0" position.
2. Select desired temperature.
3. Select the or
position.
4. The outside (fresh) air will be selected automatically. Additionally, the
air conditioning will automatically operate if the mode is selected to the
position.
If the air conditioning and outside (fresh) air position are not selected automatically, press the corresponding button manually.
To defrost outside windshield
1. Set the fan speed to the highest (extreme right) position.
2. Set the temperature to the extreme hot position.
3. Select the position.
4. The outside (fresh) air and air conditioning will be selected automatically.
Hyundai Sonata LF 2014-2019 Service Manual: Knee Airbag (KAB) Module Repair procedures
Removal
1.
Disconnect the battery negative cable and wait for at least three minutes before beginning work.
2.
Remove the crash pad lower panel.
(Refer to Body - "Crash Pad Lower Panel")
3.
Remove the mounting nuts (A).
4.
Disconnect the knee airbag connector (B).
Installation
...
Hyundai Sonata LF 2014-2019 Service Manual: Cooling Fan Components and Components Location
Components
1. Cooling fan controller (PWM)2. Fan motor3. Cooler fan4. Cooling fan shroud
...