I just bought a 1999 Audi A6. I tried turning on the air and it looks like it should be on, but maybe I'm pushing the wrong buttons?? I got the air to come on for a second because I barely felt it coming out but I tried to make it blow harder and I shut it off somehow. I might add it WAS cold, just not a lot was coming out. I am not used to all this luxury in a car! Please help.