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Fogged up headlights or windows?

1373 Views 8 Replies 8 Participants Last post by  sciontc_mich
Posted this over at scionlife.. just wanted to post it here too to get reaction of the members here


wanted to know if anyone else with a tc has experienced one or both of these things I'm seeing..

- headlights fogging up inside (left headlight assembly on mine)..

- fogging up of windows inside

I've used vinegar/water mix and glass cleaners but they only last for a little while..

let me know..
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Haven't experienced anything out of the ordinary.
none of the above for me. but i have heard that fogging up headlights and/or moisture in the headlights is not good at all and should be taken care of fast.
Yes I've seen headlights fogged up... and I've seen moisture inside the head & tail lights. What can we do about it??
yeah i got fogged up interior windshield since its gotten cold here.
It happend when I went up to bw3's and was there for about two hours and came out to find my interior windshield a bit frosted over!!! i had to sit there for awhile for it to defrost which sucks. normally i would leave my car running while i scrape the frost off the exterior windows then go, but i dont want to be scraping my interior windows. does this means i have some sort of leak inside the car??
Try using some of the Rain-X anti-fog glass wipes.
Originally posted by sciontc_mich@Nov 27 2004, 06:49 PM
Posted this over at scionlife.. just wanted to post it here too to get reaction of the members here


wanted to know if anyone else with a tc has experienced one or both of these things I'm seeing..

- headlights fogging up inside (left headlight assembly on mine)..

- fogging up of windows inside
I noticed my headlights 'lighty' fogged on the inner corner the night I got the car home from the dealership. I posted about it and got about the about the same response. It appears that the fogging only appears in the headlights on really humid and cold nights, Northern California cold that is [35F-50F]. It seems to go away as soon as the air temp inside the headlights equalizes with the outside air. It seems most prevalent when I've washed the car. It hasn't been enough to cover more than about 15% of the total interior surface of the plastic and it seems to go away invisibly.

Hope this helps.
As for the interior windows, I've only noticed the inside of my front window fogged up in the morning and it usually clears up within about 30 seconds of the defroster blowing on it. It hasn't been cold enough for it to freeze and isn't an issue after a half a minute.
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"Fog" inside the headlights: If it's just finely-beaded fog, this is not a problem. If you see any more than the thinnest layer or bigger drops of water inside, though, this is a problem. You should probably get it checked out at the dealership.

Fogged Windows: This is a universal problem with cars, caused by differences in the humidity inside the car and out. You might try opening the windows a crack or using the defroster.
thanks for all the replies.. definitely a problem with my drivers side headlight, it's now spreading from the turn signal area over to the headlight area.. so dealer can replace the assembly..

the fogging up inside, realized what it is.. the plastics are new and when they are new they tend to "out-gas" releasing that "new car smell".. that stuff is on the inside windows, that's why I keep having to clean them.. i think the heat from the heater is helping that.. forgot about what it was like to have a NEW car!

thanks for the replies.. i'll post what the dealer does, chances are they'll replace the headlight.. i love warranty
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