Hello all, I have just purchased a 2000 model 1.8 ghia ford focus, and have noticed that the remote central locking is not working properly, when I press the lock button on the remote the car tries to lock but does not, I have noticed that I cannot hear any sound coming from the drivers door lock, if I lock the car manually it locks all doors, then the alarm can be activated by the remote, and also when I unlock the car with the remote the drivers door stays locked, so I have to unlock manually, thanks.