This is one of those things I have yet to investigate on the new 280SEC. I have two push/pull knobs under the dash. Both are very period looking. One is fixed on the far left side under the dash. The other is just hanging over just to the left of the AC unit, tucked back in a bit.

It seems I have seen many Mercedes of this era with these kind of things, they often seem to do nothing. I had a 250C that cut the ignition off when activated. I have seen others that turn on a heater blower. Does anyone have any suggestions on what they might be for. One seems like it could possible be factory?

Thanks,

Michael
220SEb
280SEC
250C