I've just got my A3 Convertible 2.0TFSI 2010. Almost fully equiped, but some options were not factory fitted, so I have already started my plans to retrofit the following: Garage-door opener Radio Controlled Clock Park Assist (Factory fitted RNS-E, so I want to have the optical view as well.) The car already has rear park sensors. I have already sourced the parts for all these options: Park/Steering assist Unit 8P0 919 475K Front sensors x4 Park Assist sensors x2 New front and grill Inside front beeper Front parking help+assist button Has anyone done this? What units would I need to re-code, so that they know Park Assist exists? I was thinking to create a neat instruction with pictures as I go along.