My wife and I went to the beach at Ocean City, MD this past weekend.
We were driving down Coastal Ave at night. The outside temp was about 88 and it was humid.
We had the AC on and a foggy mist started to get on the outside of the front windshield. Every couple of minutes I had to run the wipers.
Anyone know a way to avoid or eliminate that mist??

TIA,
Mr. B

 

Hmm. you get glass below dew point temperature and it starts condensing water on it. It is a major law of physics from what I remember. Most likely not fixable, really.

 

Check the flux capacitor ...they tend to get a bit wonky at 88.

Just joking of course! Im sure it was due to the cold air making the windshield cold and when the humid air hit it caused some condensation.

 

this is normal

 

Thanks everyone.

This is what's great about this forum.
Mr. B

 

 

I think the only way to fix it is to move...

 

Typically that condensation only occurs when you have the A/C set to blow out of the defroster vents. Try setting the A/C to blow via the floor vents or center vents only.

 

I noticed that whenever I turned on the winshield defrost, the AC compressor turned on, (AC off) went dark, but it blew hot air. Any idea why?

Thanks

 

I have the same problem when the air is in auto. It must vent equally out of each the defrosters, the dash and the floor. It goes away when you put the air in the manual mode and direct the air out of the dash and or floor.

 

Yeah, that's what I found, after hearing from everyone here.
Mr. B

 

In most cars, when you turn on the windshield defrost, it also activates the A/C. This is normally done so that moisture will not develop on the inside of the windshield since the A/C removes most moisture from the air..

 

You guys are all lucky: I've never had a Porsche where the AC got cold enough to form condensation on any glass inside or outside.