I have the AL steering control module with the newer type buttons. I had to take my mfd2 out the other day for repair so turned all the coding off for nav and radio on vcds,
One of my mates is a VW/Audi technician and has a few of these rns-510's laying about so we tried one which was a 2008 build and with out any coding or any thing the rns-510 worked with my steering buttons. I will be purchasing one of these once I've got the money together.
Phil if you need my mates number to have a word with just send me a pm and ill pass it on, He actually does all the auto electrical stuff for audi in leeds, so he knows his stuff if he doesn't know then maybe Ray user name (aRd) over on
www.uk-mkiv.netDarren