Eliot, apologies if my initial comment made your thread derived from a question to a technical quiz! Still looking FW to see if you have any fault code(s). Let us know when you have them.
As for the dealer ATF flush, I have no idea how they do it and couldn't care less in all honesty. They do not charge by liters as qty does not appear on the billing. Mind you the Porsche service center here is larger than your average WallMart mall with 100+ employees hard at work. All of the fluid/filling hoses runs down from the ceiling, so my guess is they don't really bother with opening little cans of ATF all day long lolll
They do however bill/list for a complete flush and a 'certain' cleaning fluid and take the car for a spin twice in the process.
The Damage: $532 (in green dollars equivalent!).
Markus, I have no idea if the tool they use is the same as Tim's kit. They did removed a few parts from the tiptronic and I saw them plugging all kinds of stuff to it, whatever they are. Couldn't see clearly from the service center waiting room - was busy reading the HD pictures out of those amazing Porsche books instead