Hi Reg Rooster, Thanks again for all your help. I was going through a stash of old radios from various audis i have had in the past and i found another gamma cc that i know works, it came out of a car i purchased from an elderly neighbor, but she had lost the code card. Auz1z6b0109052, Blaupunkt Bosch Telecom 7 640859386, Gamma cc us 4a0 035 093 made in portugal, it has a orange sticker on the serial stamped side S543 and two white stickers on the back one reads 0306 the other 0201. Thanks for your help in advance.