I have a 1990 560 SEL, which I bought used, with no
owner's manual. No problem, I've been a Mercedes
driver for more than 20 years, so I figured out all the
switches and buttons, except for one. If anyone can help,
I would greatly appreciate it.
The switch is located below the ashtray, between the
two seat-heater switches. and it's an original Mercedes
factory switch, but I have no idea what it's supposed to do.