Yeah I know. I did the requisite search but nothing I found quite approximated my problem. Seat memories; '89 300se. My car has amnesia bilaterally. When I set the memories they hold while the car is running and for about 30 minutes after the car is shut off. After that they are gone. The passenger side goes first then the driver's settings go away too. The seats otherwise work flawlessly.
I am an old VW mechanic and find the mercedes a needlessly complicated car. My 300se is in its inimical way convincing me to resurrect my old volvo diesel from its resting spot in the back yard.
Now if I can only find that swedish brick beneath its mound of kudzu.