I just checked and the TCU pin area looks clean. I then tried my Mac Mentor under MB but it would not let me identify the controller. I read on here taht a person can purchase an Alltel scan tool and then purchase the MB update and that will allow a person to delete codes. Anyone w experience with this? I also read that if I purchase a used TCU, same application, 2004 coupe w automatic, it should be a plug and play. Anyone have experience doing this? How many numbers have to match on the tag? I found a used one and the numbers match A 033 545 11 32 EGS52. If those number match, is that enough to make then matching? Or can anyone recommend any companies that reprogram these?