REMOTE CENTRAL LOCKING FOCUS 2003 MODEL

I have a ford Focus 1.6 LX 2003 model. For some unknown reason, the remote central locking and the Left front window have just stopped working.
i have checked all fuses, however they all appear fine.
Does anyone know if this is a re-occuring problem with this car, and any advice as to what to do to fix it.
regards
snipped-for-privacy@aol.com
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