Im guessing that my tiptronic isnt working because when i pop it over to tip it doesnt display the gears 1-5 on the dash instead of PRND. It hasnt shown the gears since i got the car. I was told that if the batter died or was replaced that the transmission computer might need to be reset or it could be a ground or a fuse or a relay. Not sure where to start. It also seems to jump going from 35-45 and sometimes when excelerating on the highway. Im using 93 octane gas and I just replaced the Purge valve for the gas fumes