Just picked up a 04 R53- lurked for months, signed up here when I purchased.
Bought it knowing that the passenger window didn't roll down, reading here heck just need to hit the door panel to make it work (90% of every thread I read this is what make's it work), past owner did replace motor, so hitting door didn't make it work.
I tested the motor with a 12v source and I can manually work it up and down.
I here the relay clicking at module, have wrapped on it. And this didn't work, I was told that the relay's might be replaceable but they looked hard soldered. I'm going to investigate the connectors better possible corrosion? if not would it be in the actual module itself?
If i can get a used module same "exact" number's on it will it be a plug and play or do I need a brand new one and get it reprogrammed from dealer?

I've done the switch up for 30 seconds thing too. I've tried everything that's been posted for this problem, but haven't seen "Any" that have been close to my problem, like I said the majority have been cured or temporary cured by hitting the door..

Thanks,
Vin

 

have you checked for voltage at the motor ? then work backward

I'd suspect the relay

 

Yes No voltage at Motor, last owner replaced motor and cut wires inside door and never hook motor back up because it didn't work..

So I did have ZERO voltage at wires going to motor.
Going to take it apart today, going to roll window down all the way then hook up wires and do all the reset stuff, to see if this will make a difference as far as a "Reference" point.