mbdoc,

Every single fuse in the box under the hood is fine. I even wiggled all of them as sometimes I know the connections can be dubious.

I removed the box from under the rear seat, and took off the cover. I had someone else press all the window switches one at a time while I watched the relays. Every relay activated for each up / down press of each switch. It seems the problem is downstream of this module? But what?

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2002 Mercedes-Benz E320 4Matic
1995 Mercedes-Benz E320 Wagon
2005 Land Rover LR3 V8 SE
1999 Audi A8 4.2L quattro