To reduce the probability of fogging up the inside of the windshield, the air
intake or air conditioning are controlled automatically according to certain conditions
such as 
or
position.To cancel or return the defogging
logic, do the followings.
1. Set fan speed to the highest (extreme right) position.
2. Set temperature to the extreme hot (HI) position.
3. Press the defrost button ().
4. The air-conditioning will be turned on according ...
1. Turn the ignition switch to the ON position.
2. Turn the mode selection knob to the defrost position ().
3. Push the air intake control button ()
at least 5 times within 3 seconds.
The indic ...
Hyundai Elantra HD: Defogging logic
