I will ditto 420SE's comments, the "fan" buttons are for low (for the bottom) and high (for the top) and the center is automatic mode. It will change as you change the temperature selector wheel. I do not think those buttons automatically turn it on, unless the system "thinks" it needs to do so to adjust temperature.

I am puzzled about the "EC" button you are referring to. My 1985 380SE does not have that. Perhaps that was something only on the 500SEL for 84-85?

Agreed- $20. for a new owners manual is very good. I paid $22. I think for a used one from a member here on the forum, but it did include other manuals, such as warranty info, service booklet of some sort and the factory tag that was attached to the cruise control- which is pretty neat.

Good luck - glad to hear the car is still doing well. Makes me wish even more I had of bought it. Seriously, I am glad it went to a good home.

420SE- thanks for that info about the "fader". I will check it and see if it still works. Interesting indeed.