Join Date: Jan 2017
Drives: 2016 Optima
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when this happens, my front window still steams up, indicating that the front vents are not on, despite the Auto notice flashing that shows that front vents are in use.
Additionally - the pressure of the air seems to fluctuate randomly and quickly - and the car seems to cycle through various modes (different vents operating randomly at different times in quick intervals).
All - thank you so much for the tip on auto defogging. The dealership told me that according to my VIN I do not have this featire in my SXL...but upon further research I am convinced that this must be the problem. I am going to research it further and try the manual shut down to see if that helps...
Look behind your rear view mirror. On the windshield you should have a small piece of slotted cover. It houses the moisture sensor.
Section 4 page 150 or 237 in PDF in your owners manual describes the process. Also, it shows picture of the sensor.
Look in there and tell me if this is what is happening.
From what I am reading from your story - you deal with it after driving for a while with recalculation on. It adds humidity and the sensor will pick it up. When it does, it overrides everything else. You can switch it back, and it will be blinking and will go back it what it thinks is the best.
I had to deal with it as well.
Now, if you have SXL it is equipped with you must have automatic climate control. If so, it is unlikely to NOT have defogging...
Only the two basic versions do not have auto climate.
Solution - deactivate logic and defogging.
Tell the dealer to follow deactivation of the systems on these pages:
This should solve your problem and now you can control the system yourself.
This WORKED! I was able to locate the defogger and deactivate the system. I am so grateful for your insights. Thank you all!
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