I have recently purchased a 2010 Fiesta Zetec. It came with two keys, one of which is the three-button remote variety and the other is the basic no-button variety. As far as I am aware they are the original keys that came with the car when it was first sold. I have a spare three-button flip style key from my old 2006 Focus Sport and was hoping to be able to use this with the Fiesta, so I ordered a blank blade off the Internet and have had this cut to fit the Fiesta. I have researched online and the common method I found for programming a new transponder key with two already programmed keys is as follows: Insert the first already programmed key into the ignition, turn it to position II and wait for the warning light to go out Turn back to 0 and remove the key Insert the second already programmed key into the ignition, turn it to position II and wait for the warning light to go out Turn back to 0 and remove the key Key programming mode is now activated and you have ten seconds to: Insert the new unprogrammed key into the ignition, turn it to position II and wait for the warning light to go out Turn back to 0 and remove the key Allow 10 seconds to pass for the system to exit programming mode.I have tried this a few times but with no success. When I get to step 6 and turn the unprogrammed key to II the warning light just flashes rapidly and does not go out. It doesn't appear to be recognising the transponder chip in the key for some reason. Does anyone know what could be causing this? Does my 2010 Fiesta use the same type of transponder chip as my old 2006 Focus? I have also tried to just swap the transponder chips as a simple solution, but the one in the remote key that came with the Fiesta doesn't want to budge. I've tried to remove it somewhat gently with a pair of pliers but I'm concerned that I'll damage it. Any help or advice will be gratefully received!