These are on the 1984 380sl I just recieved and I'm asking the nice people of the forum for some help until I can get some documentation

What do these buttons do to the right of the temp setter?




What is this switch on the dash ?




What do the little round knobs do just above the steering wheel in the pic? Brightness for the dash and what else?





Also, for the folks that tried to help with the other switch...
this is where it's at on the console.