I have a 2005 A8, I know it is equipped with rain sensing windshield wipers because they worked before. I moved the selector now I can't seem to get them to work again. What is the correct setting to leave it on for the windshield wipers to "pop on" automatically??

 

The all the way down selection is off. One up from that is auto rain sensing, and up from there is manually turning them on. So putting your hand on it and pulling it towards the floor, on the lowest click it is off(for going through car washes) one notch up is auto!