You might have a problem with the switch on the back of the door lock , or the control relay under the dash in the relay block just in front of the brake pedal .  Its also possible that both items have failed.

Jeff
 The Central locking on the Charisma first of all the Boot stopped
 locking, I replaced the solenoid but the replacement does not work
 either so I assume it is a more deep rooted problem, and now half the
 time when I go to unlock from the drivers door half the time it will
 manually unlock the door but sometimes will not operate the central
 locking, after 2 or 3 times the central locking will usually operate.

 The interior switch on the console seems to work all 4 doors reliably
 but not the boot.

 Can anybody tell be where the electronics for the central locking
 control unit are so I can check the connections?

 --
 ButIstillneedtoknowwhat'sinthere! Thekeytoanysecurity
 systemishowit'sdesigned! Thatdependsonwhyitwasdesigned!
 Ihavetoknowwhatwhoeverdesigneditwastryingtoprotect!
 (Blakes 7, City on the Edge of the World  - Vila in typical panic mode)