I had the same problem and it became extremely annoying to the point that I was considering selling my car. My windshield fogged up on my way down to Florida and it was 80 degrees! When it would rain a lot (happens a lot in NC) my windshield dripped on my dash. It wasn't leaking in through the windshield, but rather allowing moisture to form. When it would get cold I had ice on the inside of the windshield! It was always near the bottom of the windshield. If I had a few people in the car when it was raining, good god - I could not keep any windows clear. Horrible. Couldn't understand it. I never had a car do this and this and I've owned over 30 cars. A blessing in disguise happened...an non repairable chip on my windshield. When safelite replaced it, he showed me the extremely thin bead of sealant used and said this was very common in newer cars these days. The bead was maybe a quarter inch wide at best. This guy put 4 times that amount - it wasn't going to leak and it doesn't. Since the replacement I do not have any of these issues anymore. I "hope" the problem is resolved for good and I believe it is. It's been 3 weeks now and no out of the ordinary windshield fogging, icing or dripping issues. Everything seems normal and I'm once again happy with my car. I joined this forum specifically to let people know what fixed my problem because I know how irritating it was to me. I read a lot of peoples complaints on this same issue and could not find an answer as to why this was happening. A new windshield fixed mine. Possibly a class action could get it fixed or an "oops" on your windshield. Possibly the manufacturers warranty may cover it?? Certain states by law require free window replacement on cracked or damaged windshields. The windshield can be taken out and resealed so it doesn't necessarily mean you need to buy a new windshield. It's just a sealing issue...at least for me it was. I can't guarantee this will fix yours, but it certainly fixed mine. Good luck to those who have this problem.
