Frost inside windshield?

[diamondlarry]

I don't think I've ever had the climate control on recirculate before. I always leave it on fresh air.

[richard schumacher]

Originally Posted by diamondlarry

I don't think I've ever had the climate control on recirculate before. I always leave it on fresh air.

And the windows still frost up on the inside? Something is wrong; outside air plus heat should dry the windshield in a jiffy. Lots of people use these cars in Canada, Minnesota, et cetera and don't have this problem.

[David Beale]

Well, in Canada, when it's nice and cool (-20C ish), frost will deposit on the windshield if there is enough moisture in the car. More than one person in the car, some snow transported into the car when you enter, or more rarely at that temp, high outside humidity.

The solution is easy. Select the climate screen, and press the front defrost button. It will remove the excess moisture from the air ensuring you don't get any more frost on the windshield, and will also remove the frost from the windshield that is already there.

I really don't understand why this topic has so many postings. It's not rocket science. One button solves the problem.

[DaveinOlyWA]

hey i do recirculate frequently because i feel that i am sucking less exhaust if sitting in traffic...

i figure, i aint making any, i shouldnt have to breathe any...

[diamondlarry]

Originally Posted by richard schumacher

And the windows still frost up on the inside? Something is wrong; outside air plus heat should dry the windshield in a jiffy. Lots of people use these cars in Canada, Minnesota, et cetera and don't have this problem.

I need to be a bit more clear. The frost forms after the car sits in the parking lot at work for 8-9 hours. Once I get going and get it cleared off it stays clear.

[richard schumacher]

Originally Posted by diamondlarry

I need to be a bit more clear. The frost forms after the car sits in the parking lot at work for 8-9 hours. Once I get going and get it cleared off it stays clear.

Ah! As the cabin cools the relative humidity rises until water vapor condenses on the windows. It should help to sit and let it run with the defroster going and using external air and a window open and the temperature on max for a minute or so before shutting the car off. Anything to dry out the cabin as much as possible. But then that will reduce fuel economy by some amount... just opening the window for a minute to get rid of as much of the warm air as possible might be enough.

[morpheusx]

This isn't the first car I've had that has done this, but the two cars I've had with this problem have a similar design. I think it is the wedge shape of the windshield as my previous car an Eagle Talon (same as a Mitsubishi Eclipse) would also do this frequently. I think it has something to do with the way the dash sits fairly close to most of the windshield.

The best tips I have to offer as I have dealt with this every year since 1997 have mostly been mentioned prior but...
1. Always kick your boots together before you bring your feet in the car to keep excess snow out of the car.
2. Don't switch the A/C off when on Defrost. (the Talon automatically turned A/C on when in defrost regardless if you tried to turn it off)
3. Make sure your windows aren't cracked while you are parked.
4. It also helps if you try to park where the sun will be facing your windshield for most of the day while you are parked.