Oliver, from the sounds of things, the blend door in the ventilation system is not functioning properly. What should happen is when you use the defrost, your car should also kick on the A/C system (yes, I know it sounds odd). So, what will happen is that the incoming air will first pass thru the A/C cooler in the dash, this should remove most of the water in the air. Next it will go thru the heater core and heat the air up to further aid in removing the moisture on the window. You can verify the A/C system working by simply opening the hood/bonnet of the car, starting the engine, and then getting out and listening for a clicking sound from the engine bay. This clicking should be the A/C system turning on and off as necessary to maintain a given amount of cooling (the rate of clicking is dependent on where the defroster temp is set). Since you are not talking about the A/C being weak during your summer months, I am assuming that you have a full freon charge. If it was, then the problem could be as simple as needing your A/C system recharged.

 

Smokers can do a lot of damage. I don't smoke but if you own the car, you can do what you want to in it. That being said, my windshield can fog up some. I've cut a lot of that down, by taking glass clearer to the inside glass once a week. It's simple, but it couldn't hurt.

 

Do the check Thermo suggested. Sounds like you are getting a little more condensation than normal. And "normal" for the X type is "a lot" for any other car.

You may as well change the cabin air filter if you have not already an do not know its age. They are cheap, pretty easy to come by, and it is a 15 minute job.

 

I am dealing with the same issue in the winters in Wisconsin. I have not had time to mess around with it and seeing as though it is summer here, I have a few months before this nuisance rears its ugly head again. From what I have learned so far, there are two major factors as cause for this issue:

1. Cabin air filter (never hurts to replace this anyways)
2. Air recirculation flap under the dash might be stuck in the closed position. Easy way to find out if this is the case: turn your air on full blast, then press the recirculation button, if you DO NOT hear a difference in the sound of the blowers, something is not right. To get to the flap, you need to remove the glove box (4 screws). You can see the flap there if you look under the dash, behind the audio system. If the flap is closed, it is recirculation wet air in the car in the winter and with cold temps outside, this equals fog on the inside of the windshield. Solutions: remove it or superglue it in the open position.

Good luck.

 

there is a tsb out for this fix. Can someone pls e-mail it to me at amit.kareer@rocketmail.com? I have the same issues.

 

Was there a tsb out for the fix? If so what is it? I have been having this problem with condensation now for a year now and it's driving me nuts. Getting ready to check the flap, but if of course it is stuck I would like to know how to fix it.

 

All the details to make a repair as proper as you would like are in the post labeled "condensation".

 

this has been discussed in many threads. I am certainly willing to help, but in this particular case, I really suggest that you use the search function and do some reading.

 

PM sent in 2 parts

 

Never had an issue until my A/C Compressor died. Now the fogging happens more often. You may want to check and make sure your compressor is good as well. At least before you sink any money into it.

 

I also had this problem but caused by rain water entering the the cabin through a torn drivers door membrain, which soaked the carpet. I removed the door card, repaired the plastic membrain, dried the carpet out and solved the problem,simple!

 

I found the easiest and cheapest way to clean the fog from the inside until the defrost does it...get a blackboard eraser. It will clean the windsheild without leaving anything, Since it absorbes the moisture, it does a great job. I keep one in every car I own, and never have problems. Try it, you'll like it !!!

 

my kids left water bottles in the car the back carpet was soaked. after it dried up yhe fogging cut down by half. i figure the cabin filter is saturated