Hi all,
New to this forum. Hope someone here has info on '85 Euro 500 SEC door panel R&R. In the middle of restoring my wood dash, my drivers door window crashed today. Any help appreciated. Have searched this and other forums and have been unable to find anything specific to this model or any 126 coupe

I guess you already know what the problem could be.. so here are instructions to removing the front door panel on a 1986+ car... I would assume the pre-1986's are the same but not 100%. I will use this thread as a future DIY link on how to remove the front door panel. If someone in the future asks how to remove the front door panel... they'll be smacked[:p]
1) using a flat head screw driver, gently pry off the buttons on the power seat switch.
2)Remove the plastic cover behind the chrome door pull
3)Once plastic cover is removed, unscrew the small philips screw.
4) screw off the door locking pin.
5) unscrew the chrome C-shaped piece on the side of the door at the end(there are 2 screws holding it).
6) If your door has speakers, remove the 2 screws at the bottom of the speaker grill and remove the grill.
7) The padded arm pull has 3 screws. Once the speaker grill is removed, the last screw will be accessable. Unscrew the last and middle screw. The first screw will not be accessable yet.
8)Going back to step 1 where you removed the buttons off the seat control switch, gently remove the black plastic cover. Careful as the side closest to the passenger has a tab and it can break, so start from the middle and lift towards you. It should come off easily.
9)Once the black plastic cover is removed, unscrew the 2 brass colored screws that hold the seat control switch. Pull it out and unplug the wires from the back.
10) At this point, the black "cage-looking" metal frame around the chrome door pull should slide off a bit. Once you slide it off a bit, the screw holding the padded door pull will be accessable and unscrew that.
11)Remember that the door panel is held on by L-shaped hooks and you don't want to break them off. So push the panel in and then UPWARDS. Do NOT pull it towards you... but ONLY UPWARDS.
To put the door panel back on... simply reverse the instructions.
The rear doors should be easier, as you don't have a seat control box nor speaker grills to remove, but for the most part the instructions are the same.
Good luck!