right, i got a new key remote for my mrs focus as the old one became broken and the buttons didnt work, i swapped the key part with the old one, so in effect i now have a new remote on the old key.

i did the four ign turns on and off with the std key, and pressed a remote button...all went well, the remote works! but now the key wont start the car....

the spare blue chipped key starts it fine,

my question is, how do i make the key with the remote work? do i need to do the four turns reset with the chipped key? or will it wipe that aswell?