No idea how to use VCDS? Here is a PDF to get you started. The hidden menu is not accessible from chorus or symphony stereos. The only mods that work on the Chorus, Concert or Symphony stereo are the ones that don't use hidden menu options. Most should work on a facelift car however there are a couple that won't or need to be completed a different way. These have been tested completely on pre-facelift. Please post any others I've missed or any mistakes and I'll add them to the list. I'll keep adding them as new ones are found So here is the full list (as of right now), they have been checked however I hold no responsibility if you mess up! I've been adding mods today and realised that we have no comprehensive list of codes on this forum.