hello,

I have an Audi S 90, 1994 that works like a charm. However, the defroster is not working at all and I can't see anything when I drive. The vent works fine. I lived in Utah and never had problems in the winter. I now live in Texas and even though it doesn't get as cold, my windows get extremely foggy.

I was told that there may be a leak somewhere and that may be true as I felt a couple of drops on my foot during the summer when I was running the AC. Other than that, I have no clue and I'm not very savvy when it comes to fixing stuff, but I could find my way around it.

Thank you for any feedback or suggestions you can provide.
Sejo

 

Your car might be having a leak in the heater core. You can try sealing them using sealing agents but it is only a temporary fix. It would be better if you replace the heater core.

 

Thanks you