Ok so today i got in my car witch is a 2004 A6 S-Line with Tip tranny, and when i put it in drive it was like it was in N and the car wasnt moving so i put it back in Park and then back in Drive and everything was fine.........but later in the day, the car started to shift hard and skip and slip kinda when it gets around 3000RPM in 2nd gear, but fine in any other gear, can you tell me what could be wrong! ?? thanks.