Power locks and windows on 2001 Mercedes-Benz E55 AMG

What causes the power locks and windows not to work? I have checked all fuses that I can find and none of them appear blown.

Asked by for the 2001 Mercedes-Benz E55 AMG
Electrical problems like this can be due to many things, and unless someone has some experience with this problem on this vehicle, it will require a diagnosis by a repair shop. It may be a switch, relay or a wiring problem, or even a software problem.