Hello. I have a problem with the central locking on a mondeo mk3. None of the doors respond to the remote. And when using the key only the driver side door opens. All doors need to be opened manually. And the boot also needs the key to open. The button inside the car does not open the boot either. Could this be the central locking module that needs to be changed? Is it something I can get from a scrapped mondeo and change myself or do I need a new one and get it programmed by ford? Thanks for all help.