I have a '94 3 Series convertable. I had trouble with the driver side door
too -- the window would not drop when I opened the door. My problem was one
of the switches in the door latch mechanism was sticky. Upon reassembly of
the latch, I missed one of the linkage points. Now, my door locks and
unlocks properly, but the button does not pop up. This is similar to yoru
symptom, but my door actually unlocks even though the button remains down.
(The button comes up when I open the door with the inside door handle, or
the passenger key to unlock the doors.)
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