The only thing i know about the central locking is how to check to see if you have a fault with any of the door catches/central locking motors. If you open the bonnet there should be a black switch on the front panel. Press that 10 times and you should hear a beep. Now go round all the doors and open them. When opening the doors you hear a beep that catch/central locking is ok. If you get to a door that doesnt beep when you open it,there is a fault on that door. I hope that is some help to you.