Central locking problem?

I have exactly the same problem and now only the key fob will open the boot and central locking, or lock it. I have one report its a dodgy front door locking unit as this plays some sort of master function sending messages to the rest of the doors and if playing up can cause this kind of hassle.

I would also be gratefull for an answer to this one and if my fix is correct

edgar
March 2009