You need to change the long coding on the 8P A3 platform to enable those functions.
I would advise you to make sure that you do a full autoscan and save the results that way you will always have a note of the original coding of your S3.
See http://en.openobd.org/audi/a3_8p.htm#46 for more info.
Have fun.
Regards,
Paul
2005 Black A3 (8P1) S-Line 2.0TDi DSG (Ex-MarriedBlonde). Eibach Pro Springs, Koni FSD shocks and a few bling bits inside. HEX-USB+CAN Vag-Com. Gone but not forgotten - Revo 99 GTi Turbo, too much to list mod wise. - 92 Golf Gti Mark 2 16V.