Acid Water
Mixture of 50/50 methylated spirits and water
By keeping the windows clean inside and out and don't hang stuff off of the rear view mirror.
wash it off with water
use bread and grease
fastest is to scrape it off.
Goof Off will get rid off it.
To effectively clean mold off windows, mix equal parts of white vinegar and water in a spray bottle. Spray the solution onto the moldy areas and let it sit for about 15 minutes. Then, scrub the mold with a brush or sponge and rinse the windows with clean water. Dry the windows thoroughly to prevent mold from returning.
try mr clean magic eraser they clean just about everything off
Yes it does
If you rub an ice cube on it, you may be able to scrape it off of the material. Oil, like cooking oil, will also help it dissolve, but then you have to clean up the oil.
rinse in water
it could be that your relay is stuck on. your passat windows can be lowered or raised when car is off.