Renault Scenic central locking problem?

I have a renault Scenic 1999, 1.4 16v .The locks are not remote central locking I have to use the key. Last night I tried to lock the car but only the drivers door locked I couldn't lock any of the other doors or the boot, BUT when the car is driven all the doors lock via the anti hi-jack feature when you go over 4 mph. Any ideas please.