Front driver window lost it mind!
 

So Last night the front drivers window on my 400E. Would not go up switched the switches with the back switch no go. Heard clicking coming form the door, it did not stop until I shut the car off. Pulled the door panel, reg seemed ok finely got it to move it went up then back down on its own??? Then got it to go up and stay until I got to work and it started to rain and one of the guys at work pressed the button, and it got stuck down WTF seems to be moving on its own at times??? lost the plate lights then the trunk light now my window lost it mind! Electric Gremlins starting :eek:

Sounds like your switch has some loose balls in it that are shorting the connections.

For example, take a look at how the power seat switch is constructed (can't find pictures of the window switch). PeachPartsWiki: Seat Switch Cleaning or Rebuilding

Switch is broken, or the wires at the door jam are frayed and shorting.

Installed a new switch no good! so then I traced the wires and cut and ran two test wires from were I cut them on the drivers side floor, now the window will go down but will not stop at all just straight down and will not go up unless i shut off the car then turn it on and press up then it will go WEIRD!!!!!

Window gremlins
 

It's a long shot but this link may help.

1991 Mercedes Benz 300d Problem Power Windows

I just remembered the W124 has the "comfort control module" under the rear seat that controls the windows and moonroof etc....it might be malfunctioning.

Trunk fixed broken wire at the bend!!! But the window in still crazy!!! messed with it all day today nothing!!

Try unplugging the convenience control module?

HUh I'll try it tomorrow

Our 300 did something like that years ago. Unplugging the comfort module - under the left rear seat squab - seemed to cure it. At least it didn't do it again.

Pressed the passenger window today and the driver window went down??? WTF got to get at that module! Do I leave it unplugged or unplug it and plug it back in???

Try unplugging it for a couple of minutes and then reconnect everything. Doing that cured ours while we had it, but that is not say that it will work if the comfort module is broken.

I'll give it a try thanks!

Tried unplugging it! NO GO, so I picked up a used one on ebay so when it gets here will give that a try!

Plugged the new module in everything back to normal! About time !!! Thanks for the tips everyone!