Mercedes-Benz Forum - View Single Post - Passenger door won't unlock with key
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post #1 of (permalink) Old 12-19-2018, 12:29 PM Thread Starter
mrcljj
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Date registered: Dec 2018
Vehicle: 2000 W203 C180, M111 E20 EVO
Location: Germany
Posts: 4
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(Thread Starter)
Passenger door won't unlock with key

Since about two weeks, my passenger door does not unlock by key press anymore. The other doors unlock normally.
When I open the door from the inside and press the close button on my key, the door closes fine, the pin goes down.

I already removed the door lock actuator and realized that the motor only starts to run when pressing the close-key. When pressing the open key, there is no sound, nothing, and the motor just does not run.

I also tried a replacement door lock actuator and connected it to the door control module, and it has exactly the same behaviour. I also tried pressing down the door-contact-switch, didn't change anything.

So obviously, it seems like the door control unit isn't giving tension to the motor of the door lock actuator when trying to open.


I would try to replace the door control unit next, is that likely to fix my issue? Did anyone have a comparable issue?


W203 C180 no Kompressor, NOV 2000
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