I have to lock and unlock my peugeot 406 with a locksmiths key and recently it has become a lottery. The lock barrels in both the drivers and front passenger doors often revolve freely in their housing without activating the locks. I now dare not try locking the car in case I can't get into it gain. Can you help?

The remote actuators are \'friction fit\' in the barrels of the door locks .. so if you have to use the \'emergency manual method\' of opening the door eventually it just gets too loose to grip at all .. yiou can take the door panel apart & tighten it all up or just bite the bullet and go to a Peugeot dealer for a new remote key fob (no doubt it will be well over $100, especailly as they will have to \'program\' it (a 30 second task))

The car has dead locks via the central locking, it is very common on this car, take the drivers side door card trim off and look to see if the motors are connected correctly.

hope this helps. most likely you will have to change the drivers side motor.