I hope that this does not sound like too much of a dumb question, but does anyone have a good description of what each of the buttons on the W126 climate control do? I know what the two outside ones do, but the three in the middle I'm not sure of. I'm pretty sure that I have to replace my mono-valve so that is probably why I don't seem to feel any difference when any of them are pushed individually. I have discovered that if I hold two buttons at the same time I get a combined effect that has offered some results in changed air-flow in the cabin. Are you supposed to do this?

One last question, are you supposed to be able to get heat to the rear passengers through the vent at the end of the console?

A MB mech told me 'never', is this true?

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'85 300SD 'Otto' new to us Sept. '07
'82 300SD 'Jurgen' (July '06 fan shaft broke, toasted rad, 3am in the morning 60km from home, walked 16km hitchhiking.... )
'70 SS Chevelle (finally back on my property, in the shop on stands)



"The thinking required to solve a problem cannot be the same thinking used to create it!"-Einstien