Frank,I have the Bentley for the S-4 and I can get the programming procedure to you if you would like.Let me know. The book says that the codes are in the key from the factory so ya have to teach the computer the new code.The computer can learn the codes from "FOUR" different keys.You will need a key that turns on the ignition but since your useing the car DUH... I guess you have one? Smitty