Hi I have an 02 W203 C180 Kompressor. The central locking fobs are not operating the system. I have checked the batteries and the fuses. The auto locking when on the move and the central locking switch on the dash are working. I can lock passenger door from inside and then the drivers door with the manual key but have no way of locking the boot. Radio reception is bad. One of the connections had fallen off the back window and I refixed that but with no change. Should using the manual key operate the central locking or have I got a number of problems. I would appreciate an help at all..