I have an A4Avante and I can`t get the heater/aircon to blow up onto the windscreen. It used to work fine, and works still in all other positions, but when I select up or front screen, it doesn`t work, this is causing a misting problem.
I have removed the dashboard vent, to see if there is a blockage, but there doesn`t appear to be one.
Does any one have any advice, thank you Dave.
