Im sure I read on another thread that if the battery is dead or disconnected for more than 30 mins, not only does it reset the ecu but the windows 2!!! so you need to fully wind down and up to tell them there full movement as I understand??!?!
I would remove the door card and disconnect the window winder motor plug, attach this to a car battery (maybe your own via jump leads). Connect positive to one side and negative to the other and this will either make it go up or down and reverse the connection for the opposite. Bit of a pain but should work.
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