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M3newbie 11-17-2012 10:26 AM

Interior Trunk Lid Release
Hi everyone I'm new to the site.

I bought my first BMW this summer and love the car - 2005 M3.

The interior trunk lid release button stopped working this past weekend and I would like to see if I can fix it. I searched the forum for this topic and didn't find anything.

I found the wiring diagram for the trunk lid release - but am having some difficulty interpreting it and need some help on how to troubleshoot this issue.

it looks like it is a normally open switch and when you press the trunk release you close the switch and it is tied back to the general control module. From there I can't really follow what happens. How can I test that the right voltage is at the gcm when the switch is closed and the right signal is going to the trunk lock release?

Any help is appreciated.


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