PnP is a good place to practice releasing W140 front door seat switch panels without tearing or dirtying the door card upholstery.

Jeremy and I were at a PnP a few weeks ago and found what looked to be an intact windshield washer level indicator. IIRC they're NLA so it yours breaks the dealer has you go without. The front end was hit so there was no taking the level indicator without reshaping the front end.

Sixto
83 300SD