hi all

I have an Audi A3 05 plate.

Last night i went to kock lock my car and all the doors apart from my divers door locked. I tried many times by Making sure it was locked and locking it with the interior button and then climbing over and out the passenger side.

The only way it will lock lock is manually by putting the key into the door and turning it.
But then when I unlock my car with central locking all doors unlock bar from the drivers side.

The only way it seems to unlock and lock is by doing it manually.

Does anyone know what causes this or is or what I can do to fix it?

Thankyou x