Kia 2014 Optima Owner's Manual page 206

3. While pressing the air conditioning
button (A/C), press the air intake
control button ( ) at least 5
times within 3 seconds.
The indicator light in the air intake
control button will blink 3 times with
0.5 second of interval. It indicates that
the defogging logic is canceled or
returned to the programmed status.
If the battery has been discharged or
disconnected, it resets to the defog
logic status.
Auto defogging system (Only for
automatic climate control system,
if equipped)
Auto defogging reduces the probabil-
ity of fogging up the inside of the
windshield by automatically sensing
the moisture inside the windshield.
The auto defogging system operates
when the heater or air conditioning is
on.
Features of your vehicle
This indicator illuminates
when the auto defogging
system senses the mois-
ture inside the windshield
and operates.
If more moisture is in the vehicle,
higher steps operate as follows. For
example, if auto defogging does not
defog inside the
windshield at step 1 Outside air posi-
tion, it tries to defog again at step 2
Blowing air toward the windshield.
OTF044178N
Step 1 : Operating the air conditioning
Step 2 : Outside air position
Step 3 : Blowing air toward the wind-
shield
Step 4 : Increasing air flow toward
the windshield
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