I've noticed that my windows are always steaming up when the top is up ....but on the outside! It's not a real problem, but it's particularly noticeable in the centre of the windscreen at the bottom. Does anyone else get this problem, or is it just me??? I've only had the car for less than a month, so I haven't yet experienced what it's like at other times of the year.
I haven't noticed this on mine but used to get this on my old car all the time - It was usually if I had the air con on in humid/warmish but wet weather.
That would most likely be the air-con, although normal air would do it if conditions were right i.e. cold air on the inside, warm(er) damp air outside. Normal air force through the vents would be slightly cooler than outside and if the humidty was sufficiently high then condensation would occur on the cool glass. With the aircon running direct a side vent onto the side window and you might get the same condensation. My old PT Cruiser used to do this, being American it had a cooler which was as powerful as my freezer I think so this was a regular occurence!
steamy windows has been happening with me on the inside lately maybe it's just the cold rainy weather, inside i don't normally have the blowers on the windows only in the mornings, but lately have had to have it kept on the windows, inbetween cold and hot, with the air con on to clear it, or just have the windows open slightly but with the british winter weather this could be a little problem because with all this condensation it will run down in the inside of the car and could cause a problem with the electrics for instance.. Lets hope not though!
Steamy windows haven't been a problem so far for me. There again, there aren't any back seats . I must be doing something wrong!