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No-one else's cars seem to steam up but mine and I don't have Tina Turner in the car, if you get me drift ;)

2007-06-25 00:10:48 · 11 answers · asked by Icarus 6 in Cars & Transportation Safety

11 answers

High humidity causes this. When it rains it often cools down outside. The humidity in the car condenses on the windows. You can run the defroster to clear them. The defroster also runs the AC which dehumidifies the air so the windows clear. If it gets too cold more the temp lever to a warmer setting. I used to fight this too until I figured out to either run the AC or Defroster to clear the windows.

2007-06-25 00:16:06 · answer #1 · answered by K R 4 · 2 0

As a passenger in your car, you still exude sweat, even under climate controlled conditions. The water vapour evaporated from your body makes the air inside the cabin of the car or vehicle naturally more humid than the outside.

When driving, your car will be generating a wind chill from the cooler air blowing against the rain that's on the surface of the windows and evaporating it - the same effect that your body relies on when you sweat to cool down. The effect is amplified if you're doing something physical inside your car, e.g. listening to your favourite download on the MP3. :-)

So while the temperature inside rises, the temperature outside cools - and when the water vapour reaches the cold windows, it will condense back into liquid on the inside, causing the fogging effect. That fog on the windows was once part of you.

If other people don't have condensation inside their cars, it's likely to be because the temperature inside and outside the car will have stabilised, likely because they'll have turned on the air conditioning, or they'll have a window open to let the air mix and circulate, which is the most efficient way of stopping condensation.

If your windows steam up, just open them.

2007-06-25 07:34:42 · answer #2 · answered by fiat_knox 4 · 0 0

I have a car that has this problem and I know exactly why. The vent system is stuck on re-circulate. Without the ability to cycle with fresh air, when it's humid or raining the windows fog up. The best defense is to open the windows, but this is hard to do when it's raining, so we crack 'em open just a bit, and that seems to help. We'd fix it, but we were told the entire dash needs disassembled to get to the louver system which is stuck. $$$

Try cracking the windows to get some fresh air in the car and see if that makes any difference.

2007-06-25 09:25:01 · answer #3 · answered by todvango 6 · 1 0

Humidity you bring moisture into the car. Moisture condences on cold windows. That is what defroster helps to eliminate by turning on the A/C moisture is taken out of the air inside the car and blowing dry air around until the inside of the glass gets dry rear window defroster also heats the glass so less moisture sticks to that window. Lots of cars have undiscovered water leaks look under the spair tire in the trunk for signs of moisture reapir taillights and trunk lid asccordingly. Sunroof drains make sure they run clear. ant dampness leave car in the sun a couple days with everything opened up. Check under the floor mats front and rear for dampness. And run your a/c on recirculate

2007-06-25 07:26:27 · answer #4 · answered by John Paul 7 · 0 0

R u a smoker? and do you smoke in the car, if yes then this is one reason. the smoke forms a thin layer on the inside of the window, and as soon as the conditions are right it steams up very quickly.

This can be resolved by giving the window a real good clean, every now and then, using a bit of Vinegar & water. smells a bit but clears the greease.

and basicly just turn ur heat on to clear the windows as well

2007-06-25 07:24:53 · answer #5 · answered by Anonymous · 0 0

Humidity changes from the inside of your car to the outside of you car. Let's say your car was sitting out in the sun all day and then it starts to rain...it cools off the car in such a rapid fashion that it steams up pretty much. Like you would put cold water on a hot pot...it has the same affect.

2007-06-25 07:18:32 · answer #6 · answered by Flip-Flop Crazy Girl 4 · 0 0

do you own a vauxhall ?, i have had three Astra's and all though they have been good cars every time it rains i have had to drive with the drivers window open a little bit to stop the car misting up, there have been no water leaks or any thing wrong i just think its a poor ventilation design fault on some models. I have now changed to a focus and the glass is clear in all conditions.

2007-06-25 07:46:18 · answer #7 · answered by Anonymous · 0 0

my new 2013 fiat has steamed up windows in the humid morning and when it rains. The fogged up windows are on the outside! I try everything but nothing works. What is wrong with my windows?? I have tried A/C and Defrost and all i can do for the front window is leave the windshied wiper on all the time....that does not help my side windows. what can I do???

2014-08-22 09:45:15 · answer #8 · answered by ? 2 · 0 0

when your warm breath contacts the glass that has been cold from the rain it condenses to liquid. I dont know why everyone elses is clear but maybe you have a ventilation problem in your car

2007-06-25 11:21:29 · answer #9 · answered by vdv_desantnik 6 · 0 0

You probably have the heat going in your car and When the heat of the inside and the cold of the outside meet it has that effect

2007-06-25 07:14:24 · answer #10 · answered by Jade 2 · 0 2

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