The 'normal' method (i did this on the TT we had) was to get the fluid warm (above 30 deg C rings a bell VCDS can give this info)
The car has to be on level ground (obviously a dealer ramp/Lift is level anyway)
The Drain plug is removed from under the box, fluid drained out, then the plastic 'snorkel' is unscrewed from just inside the drain hole
On the TT i removed the air filter assembly and trunking to give better access, i'd imagine Audi would do the same, then undo the plastic filter housing that's on top of the gear box, near the gear oil cooler.......
Extract paper filter and 'O' ring, clean excess oil spilt, then insert new paper element and 'O' ring, then screw on the plastic cover and Torque up (20 nm if memory serves)
Plastic Snorkel is screwed back in first....
The new box fluid is pumped in through the drain hole (i bought a Sealey pressure pump with 5 litre capacity) Audi have a special valve tool that screws onto the Oil bottles and works via gravity (and squeezing the bottle to a degree)
Once the required amount has been put in (5.5-6 litres on the TT, ETKA says 7 Litres for the RS3) the filler is unscrewed
Engine started to get the new fluid warm (again VCDS is needed to monitor temp) DSG is cycled through P,R,N,D a couple of times
Back under the gearbox and once the fluid reaches the required temp any excess fluid has drained back out (the snorkel sets the fluid level) so as the fluid warms up and expands this regulates the level in the box, a little drips back out, this usually stops then you can put the drain plug/ washer back in and torque up.
Job done.
AC service, you'll usually get the car back with a lovely smelling interior, as they use an anti-bacterial cleaner on the interior part.........
Plus you should notice the A/C is 'cooler' then before you went in, as the system will loose gas over the years.
The Pollen Filter Part number is *Edited*1K2 819 653 B just check this this jay as the etka drawing isn't 100% clear
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Bringing up old post as I’m doing the same maintenance again as before...
I’ve just bought one of the sealey transmission pumps albeit only 3 litres but looks like a good piece of kit.
The sealey pump says i need to look at the manual for pressure tolerances when pumping the new oil into the gearbox as I mustn’t exceed 20psi on this pump. Surely if I’m undoing the pump plug to enable me to let the oil warm up and drain excess fluid then any air will come out anyway. Or can the transmission get damaged if too much pressure is built up?
I was just thinking pumping till a decent flow rate happens then that’s it. Whatever that pressure equates too so be it.