how can i fix my remote central locking? ford mondeo zetec 2000?

I have changed the battery on my remote key fob but it does still not work. Do I have to reset the central locking system? If so how can I do this?
john duncan, February 2006
Just want to thank rob randles -- just worked on my 2002 Mondeo -- thx Rob

Chris Kirk, December 2007
i have bought a ford mondeo 1998 n tried the above method, it doesn't work on mine ............what can i do ????

sam, March 2006
put a brick through the window

dudeonfire, February 2006
try this, insert ign key and turn from posII to pos0 and back 4 times within 3 secs. Remove key and within next 20 secs press a button on key. the warning system LED will flash to confirm programming. this worked on my 98 mondeo, so should work on yours...

rob randles, February 2006
link Click here to see other fixes for Ford.