That still doesn't guarantee accurate follow up info. over and over we are reminded to list what we are working on. Even our tech guru and forum Mod has stated such.

Best to list in signature and simply reference as needed.

Back to this thread again after removing several door panels and fixing a few doors. ;)

I did notice that the OP's DIY does not include removal of a clip I encountered working on a 1987 W124 300TD.

Removing the buttons for the seat switch to then remove the trim over the switch and the Egress lever, it is also necessary to remove a retaining ring from the center pin of the seat control.

I modified the OP's pic to show the location of the clip in question.

Again, great write up, thanks for sharing.

Someone mentioned getting replacement J clips from the dealer. Is this possible?

Answer
 

Nut Retainer/J-clip, (x1 per door)
MB# 201 990 06 91

awesome, thank you.

Which of the (bunch per panel) do these (2) replace?

Suggestion what to do with my left rear arm rest that is missing both J clips?
Trying to find a replacement. No luck. I may drive screws into the door from the corners of the speaker.

Answer
 

I added a graphic to post# 33. :D

Data needed
 

Post a picture of the lower screw anchor..

I may have good used parts or a fix/patch.

will try to get something tomorrow.

If anyone is still looking for a DIY on door panel removal, please check out the below links.

Mercedes-Benz W124 Front Door Panel Removal | 1986-1995 E-Class | Pelican Parts DIY Maintenance Article

Mercedes-Benz W124 Rear Door Panel Removal | 1986-1995 E-Class | Pelican Parts DIY Maintenance Article