E-Class (W210) 1995-2002: E 200, E 220D, E 240, E 290TD, E 300TD, E 200, E 240, E 280, E 320, E 420, E 430 (Wagon, Touring, 4Matic)

1999 E300D Driver's Window Inoperable

Old Sep 23, 2018 | 04:59 AM
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1999 E300D Driver's Window Inoperable

Replaced the door control module and when the window switch is depressed I can hear two audible clicks coming from the module but the window still does not operate. The old module only would click once so it appeared initially that the new module would solve the problem.

I verified 12 volts DC going into the middle of the relevant connector on the thicker gauge wires that are for the window motor operation. I also verified that the power is going down to the window motor when I press the window switch for the down command but the test light only lights up momentary (about one second) but the window doesn't budge. I also verified the window motor and regulator work flawlessly by unplugging the connector on the window motor and directly feeding 12 volts DC, the window goes up and down when I switch polarity.

I am at my wits end, any suggestions will be greatly appreciated because this is starting to drive me crazy!!!

Thank you so much!!!
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