It's a 1992 300E. I will post the error on the DLSV wiring.

After playing with the remote I realized that the window glitch happens when I press a remote button within close succession. I remember my mechanic telling me that once you lock the doors you can unlock and lower the windows only if you do it within 15 seconds. I wonder if that has anything to do with it. It seems that the control unit is transmitting a short signal (windows moving up but only a few inches) instead of a long signal (which would simulate the key being turned and held for a few seconds). I'll play with it a little more and will post.

Now I have to do some soldering and heat shrinking before I short the whole system.