So new door lock motor = will central lock on the interior door switch, but not with the key in the door (not remote key). Front electric windows not working (rears not fitted).
Checked and confirmed door loom checked = ok.
I bought another Polo, same spec to swap bits over. swapped over convenience control unit and the central locking control unit. No change.
Eventually I found that there is blue/white wire that goes from the door lock into the window motor controller, and then blue/yellow one from there to the convenience unit. If I link these two together I get everything working, if I take the link away it carries on working. If I disconnect the window switches, I lose c/l and e/w again. ?????
So I have fixed the car, but frustratingly I don't know what!!
Still I've now got a nice little Polo I can sell and claw back some lost time/money on.
But I would love to know what on earth is going on.
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