The rear drivers door doesn't lock with the central locking and the window only operates by itself if you press the button (even when engine is off). Window doesn't operate from drivers door button either.

 

I have replaced the door loom due to water damage prior to this problem and the regulator is brand new. Any idea what I can check next?

Any idea anyone?

Loom and connector at "b" post for poor connections or breaks. A VCDS scan after that if fault remains.

 

Have you checked the drivers door module for water damage yet?.