I've had a similar issue on my brothers mk5.
He had no lights on buttons, indicator not working and door would not lock / unlock via central locking,  had to use the key in the door to lock manually. 
Turned out to be a broken wire in loom between car and door.
I don't think this is your issue but worth mentioning.
I have a door module if you need one, but it could also be the lock mechanism/ module. 
A scan on vcds showed implausible signal for drivers door module. 
 
A scan may help diagnose your problem. 
Hope this helps.
Jas