The pump is under the rear seat on the passenger side. Pull up the rear seat and it's in a foam housing. Operate the central locking as you normally would, listen for the pump whirring. If it isn't you either tripped a fuse or your pump died. According to my BRITISH haynes manual, the central locking pump is on fuse #12. Hope this helps.
Thanks both of you,, its all fixed , a vacuum line was off.
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