Why is the tiptronic shifter popping out of Drive, to the right, when I turn left?

Worn bushes are the main cause of such problem and you would need to remove the gear shifter to check.

The Tiptronic has a detent that should keep it in place. If the
shifter is very easy to move to the right (without feeling the
detent), then something is broken or worn: (Sample from a VW)

http://www.youtube.com/watch?v=1L4J5_M8WRc

Resting your hand on the shifter while turning left "can" cause the
shifter to move right... your hand/arm is applying a centrifugal
force to the right. You might think that you are not moving your
hand / arm, but you are.

If it truely is moving on its own, you will have to take the
shifter apart to investigate.

Thomas

I found some info / diagrams. I haven't had one of these apart, so
I don't know if the "detent" is built into the Tiptronic Switch / Cover
or if it is part of the shifter assembly below the cover.

Good Luck with your Troubleshooting.

Thomas