Fogging up Windows

[cam1101]

It been starting and I cannot seem to get my windows to defrost properly. Should the air exchange be from the inside or outside? Everything doesnt work accept for wiping it with my hand. Thanks

[Mike Gerber]

To prevent the windshield from fogging up, the car should be set to outside air, or if you have a slidebar control for inside/outside air you can try to set it midway between inside and outside air. If you leave it on inside air you have to have the a/c on to facilitate getting the moisture out of the car. In the defrost mode, the a/c will come on automatically. This is assuming your a/c functions properly.

Mike

[Kep]

Defrost uses the AC to provide dry air. If your AC isn't working it isn't as effective. Use the hot temperature setting and the inside or outside setting that is driest (probably outside air except on days when it is wet outside or when the heater can't warm up the cold air). Keep a clean towel handy.

Kep

[gladis]

Also just warm up your car a bit, it takes about 3 minutes of driving to get everything working in my car, especially in winter

[Venom_5]

Originally Posted by Mike Gerber

To prevent the windshield from fogging up, the car should be set to outside air

ive been told by Toyota employees that it should be on Recirculation

i always leave mine on Recirc + halfway between Cold & hot + Defrost mode .... works fine, and my a/c is crapping out

['00 V-6 Camry]

also if you smoke in your car a film of residue gets on the window you need to clean them really good and i used rain x anti fog

[CharmCityES]

first of all, make sure the windows are nice and clean....sometimes peoples windows just look foggy but iots really just dirty windows....i clean mine once a week when i clean my car
but when i defrost, i have it on high heat and defrost with fresh air and it works fine.....recirculate mode works fine for me as well, and its prob a good idea to use it as well to reduce stress on the a/c compressor

[EvoFire]

I used to run A/C with closed windows.

Then I left the window open a crack with heater on foot.

Now I keep my windows shut and have it on outside air, mid to full heat depending on the temperature I desire. All of the above works.

PS: clean ur windows, it helps.

[xtremeskier97]

If you need really fast defrost...turn the a/c on, set it to defrost, and turn the heat up all the way, and fan full blast. Will be defrosted in no time. This is, of course, AFTER the car is warmed up.

Then after it is cleaned up...adjust things down abit to maintain it.

[feliks]

Windows fogging up like that is a result of too much moisture in the car.

LEAVE IT ON FRESH AIR TO GET RID OF IT

Don't listen to the people who are saying recirculate, that doesn't make sense, that will just recirculate ALL that hot/humid air that's already inside the car, that's condensing on the inside of the windows causing them to fog up!

[EvoFire]

^ what he said.

Also once you start using A/C, it'll take you forever for the car to be able to defog without A/C. Dunno why but that's the case. The transition just takes forever.

[kazzXtrismus]

^^
they are right
we see it all the time here in Canada
it gets cold and people get paranoid about how cold it is
close the windows and then set it on recirculate (inside).....
and then have to drive while wiping the inside of the windsheild.

ouside air for the humidity equalisation
set to hot to defrost the windsheild.

if you warm the car before you get in you can get away with recirculating the air...ONLY if you put it back to outside, when you get in the car...as all that moisture is from YOU breathing.

in the rain it works the same too...outside air and adjust the temp accordingly.
sometimes its been hot and sticky then it rains....and your windows fog
IMHO cold outside air setting works best.....or switch back and forth with the heat and see what works best for you.

this allows me to do whatever i want with my windows

if its not defogging fast enough I open a window or 2...then all done

Canadians know best becuse we get all the variables in 1 week
hot & humid to Cold & Dry, tornadoe's and snow and -40 (celcius and farenheit meet there)