Having bought a new key, and swapped the blade over (just for asthetics as the old key looked at bit worn), I've managed to completly bugger up the coding on all my keys now! I've put the blade back in the original key now (because although I could get the new key to unlock the car, it wouldn't start it), but now I cant seem to have more than one key working the central locking remotely. If I put the spare key in, and program the original key in the door, I can get it to work. If I try and program the spare key, this then works, but the other doesn't. What am I doing wrong!!!???? I just seem to be swapping the coding from one key to the next, instead of programming them both!