Bought a 2004 ford fiesta, I have the eight digit key code in case I lose the key but I wondered if this code is related to the radio code which is four digits. I don't have the radio code but did not want to remove the radio to get the serial number to look up the code. I was hoping the first four digits of the eight digit key code may correspond to the four digit radio code. It does have the word keycode on the front of the 4500rds radio, that's what made me wonder if they were the same thing, keycode and radio code.