"92 400SE window switch?

[mmaeser]

My "92 400 Se left rear window will go up and down, but it will not go up or down automatically, like the other windows do, unless I hold the window switch down. is this a switch, motor, or regulator problem? Also the window makes a thumping sound when it hits the top of the window frame if I hold the switch down too long. what parts should I replace? thanks mike

[Benzmac]

I replaced a handfull of convience modules for one window not operating properly on the express mode.

The thumping noise could be a bad motor. I have replaced a few and it corrected multiple problems.

[mmaeser]

O.K. at $240 for a convenience module, lets put one in! and where might i find this module, and how will i spot it? does one module run all four windows, or one for each window? thx guys mmaeser