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Old 08-25-2019, 11:41 AM #1
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Okay what is the secret to the front defogger?

Having two other cars that have automatic climate control, I never had an issue with the front windshield fogging up but now it seems to be hit or miss, I keep having to mess with the climate controls to get it to not fog up or collect "condensation"

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Old 08-25-2019, 11:48 AM #2
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IMO it's all about the recirc setting. But where I live I don't have the humidity you get, thank god!
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Old 08-25-2019, 11:48 AM #3
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If your AC is working fine and air circulation is good (no clogged cabin filter?), then possibly moisture somewhere in the ductwork or in the vehicle? I've had wet-enough carpet in another vehicle, and until it dried out, the AC had a tough time removing all the moisture, especially with high ambient humidity. Ended up condensing on the cool windshield for awhile.
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Old 08-25-2019, 11:53 AM #4
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truck only has 6,000 miles. AC works fine. Recirc is on when using the defogger
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Old 08-25-2019, 12:42 PM #5
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Quote:
Originally Posted by tjnptel1 View Post
truck only has 6,000 miles. AC works fine. Recirc is on when using the defogger
I thought in front defogger mode, the AC only works in non-recirc? I dont remember 100% as I haven't used it in a while, but I know my camry doesnt allow recirc with defog. When I do use it in winter it does take a long time for the fog to clear up. Maybe 5-6 minutes till it actually changes the windshield temp enough to clear the fog.
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Old 08-25-2019, 12:53 PM #6
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My 2012 SR5 defaults to outside air when the Defog is on. Does yours not do that?
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Old 08-25-2019, 12:55 PM #7
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jdm-v35 is correct, it automatically shuts off recirc and turns on ac, doesn't appear you can override it. The manual says "to defrost the windshield and side windows early, increase the air flow and temperature." I guess at some point in high humidity it will take some time to clear it.
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Old 08-25-2019, 01:06 PM #8
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my experience is if you have recirc on you can get fogging in many conditions.
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Old 08-25-2019, 01:20 PM #9
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you guys are most likely right and i am wrong, i will have to check again. Even with recirc on or off (whatever the car defaults to) I still have a hard time getting it right. Damn NC humidity.
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Old 08-25-2019, 02:32 PM #10
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Are you blowing cold air on it or hot?
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Old 08-25-2019, 03:35 PM #11
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Turn the heat on as high as it will go with the A/C on.

Quickest way to de-fog.
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Old 08-25-2019, 03:37 PM #12
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I have had to put the front defroster on and turn the heat up to high to dry it out while driving. This issue was it wasnt hot outside so it was warm until I could put the ac back on.
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Old 08-25-2019, 11:41 PM #13
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I have to turn on the defrost which turns off the re-circulation. turn the fan on to high speed and mess with the temp control (hot to cold) until it clears. once its clear its not too hard to keep it clear as long as you keep it switched to fresh all. Atlanta weather stinks too.
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Old 08-25-2019, 11:47 PM #14
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Quote:
Originally Posted by tjnptel1 View Post
you guys are most likely right and i am wrong, i will have to check again. Even with recirc on or off (whatever the car defaults to) I still have a hard time getting it right. Damn NC humidity.
AH your in NC too! Ok, formula is:

Fan all the way up and on the hottest setting. Fog will go away after a min or two.

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Old 08-25-2019, 11:52 PM #15
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From the 2018 owner’s manual:
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Okay what is the secret to the front defogger?-085b2d90-a165-46e2-aee0-6629e35faf72-jpeg  Okay what is the secret to the front defogger?-4a6d70d9-f372-477e-93b7-20cf121c13f7-jpeg 
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