All doors except drivers door locking and unlocking remotely . Even if I sit inside and push down drivers side lock , no other doors will lock with it. Any help gratefully accepted.

Door actuator would be my guess. I had a N/S rear door that didn't always lock/unlock to I replaced the actuator and it's been good ever since.

I know a guy who is breaking a 2006 one that might be the same, I can put you in touch with him if you like.