Cost me approximatly £300 pounds+ fitting.(1hr approx). If you have a midline computer, not all the buttons will work fully .ie change up/down cd tracks on my cd player (sat nav mfd2).This was in my Passat.
If you have highline computer, then wheel will work as owners handbook states.ie with radio controls.
My up/down buttons only go through trip/ mpg/range etc, whereas with highline computer, it scrolls through all menu's +scrolls up n down cd tracks etc.
HTH