Tiptronic Maintenance
#2
I don't happen to remember there ever being one for replacing tranny fluid..
but like all fluid you should replace anyway... I would say every 15-20k miles it should be replaced.
#4
Most dealers wont change it even if you ask, it's a lifetime fill
Yet I recall seeing an Audi document saying that the fluid should be changed at 50,000 miles under heavy use.