For some reason my remote central locking is not working. I have just changed the battery on my fob as it needed a new one, and tried to sync it but it doesnt even sync. The red light on the fob works fine but nothing happens when the buttons are pressed. Just for extra info, I would mention that I put a piece of paper between the battery and the cover to hold the battery in place as I have been advised to do so in another post. Anyone know what to do?