Hi. I wonder if anyone can help . My Almera N16 X reg 2000 has started being a real pain , The central locking will only lock the doors and once locked the back doors will not unlock and there is no way I can open them. The only doors I can open are those operated by the key that is the front doors and the hatch. Does anyone know if I can disconnect the central locking so that I can use the back doors . At the moment the passenger area is unusable and has been since this trouble started a week ago. I have tried everything I can think of and any suggestions would be welcome .Thanks.