Have a 2009 TT. For the last month or so the AC has been delaying kicking in for anywhere from 20 seconds to not coming on at all. I have a brand new battery in the car. Usually the ac comes on and blows fine and cold and does not go off while driving the car. Took in to the dealer and they could find nothing wrong with the AC system, same results with another mechanic. On to a third diagnosis tomorrow as the problem seems to be escalating. So now the battery light is coming on and the ac wont work. If I restart the care a few times the battery light goes off and the ac comes back on. Anyone have any experience with this?