Ok, on an e34, it works like this.
Pull out the mirror control switch. There is a torx t20 screw hiding under there.
Another screw is found on the door handle itself. Theres a little circular plastic concealing plug you'll need to pull out.
After that, you need to pop out all the retaining clips along the edge of the door. After that it should be obvious how to remove it, pull up and off the door itself.
That's for an e34. You realllly should have the bentley service manual for your car. It shows all this stuff.
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