arosashan

Help I have a Y reg seat arosa that currently has central locking... when I first bought the car the boot locked at the same time as I locked the doors via the central locking. Ive used my boot today and now when I lock my car the boot doesn't lock? I have to put the actual key into the boot to physical lock and unlock it. When I do this it then no longer unlocks.... ive checked my owners manual and doesn't say anything about it. can anyone help? Many thanks arosashan