First my driver side door lock, turns without any tension rendering the lock/unlock feature useless. I have to lock or ublock the doors using either the trunk or passenger side. I just tried to get into my trunk, and although it activates the central locking system, I can't open my trunk. Any thoughts on what might be wrong?

Thanks in advance
1995 c220

 

My remote key or spare both with new battries will not work. I have to lock or ublock the doors manualy. So thecentral locking system is not working, I can open my trunk manualy.

I cannot close the doors centerally( I thought that you coulsd do this by holding the key douwn in the drivers door lock?)

Any thoughts on what might be wrong?

Kind Regards MJB