Defogging Logic
To reduce the possibility of fogging on the inside of the windshield, the air intake or air conditioning is controlled automatically according to certain conditions such as
or
position. To cancel or restore the anti-fog logic, do the following.
Manual Climate Control System
.jpg)
1. Turn the ignition key to the ON position.
2. Press the defroster button (
) for 10 seconds.
3. Press the air intake control button at least 5 times within 3 seconds.
The indicator on the air intake button flashes 3 times at 0.5 second intervals. This indicates that the anti-fog logic has been canceled or restored to the programmed default state.
If the battery has been discharged or disconnected, the system resets to the default anti-fog logic state.
Automatic Climate Control System
.jpg)
1. Turn the ignition key to the ON position.
2. Press the defroster button (
).
3. While holding down the air conditioner (A/C) button, press the air intake control button at least 5 times within 3 seconds.
The climate control information screen will flash 3 times at 0.5 second intervals. This indicates that the anti-fog logic has been canceled or restored to the programmed default state.
If the battery has been discharged or disconnected, the system resets to the default anti-fog logic state.
Test yourself
A quick Hyundai Sonata LF quiz: every answer comes with an explanation and a link to the manual page.