2005 Ford Focus central locking not working

Sounds like the system needs resetting. Take a look in the owners manual to see if it tells you how to do a central locking reset...

Solution turned out to be - clod hopper son had accidentally dislodged the wiring in the passenger footwell which in turn created all of the problems mentioned - it was a half an hour job costing only £22.00 by a electrical mechanic as opposed to the dealers quote of approx £80.00 for up to a 2 hour diagnoses then potential parts and time thereafter.