The right rear door on the '98 190E 2.3 will not open from the outside.

OK ... but the inside door latch is broken and will not open it from the inside as well.

Any suggestions? Is it even possible to get the interior door panel off while the door is closes?

Yikes!

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'03 E320 Wagon-Sold
'95 E320 Wagon-Went to Ex
'93 190E 2.6-Wrecked
'91 300E-Went to Ex
'65 911 Coupe (#302580)