Don't try guessing these codes. I can't remember exactly how many tries but I locked a radio up with a few tries finding the right buttons from my poor memory. I even had the right code in front of me but was trying to put the radio in another car I was restoring. Once the radio locked up it wouldn't even accept the right code. I ended up realizing if I reinstalled it in the original car it should fire up again. Sure enough, it reset the system and I had a few more attempts again. VW doesn't like you swapping radios around.