My A4 is behaving in a most peculiar manner. Some months ago the front passenger door would not open from the fob. It opens from inside. That problem went away. Last month the rear passenger door behind the driver did the same. It went away. This week it's the drivers door that will not open. I've researched it to no avail using all sorts of tweeks but no joy. One suggestion was to open the drivers window and simultaneously pull on the outside door handle while pulling the inside door release. N