Thanks for the tip, it's not the buttons. I am fortunate enough to have a parts car to swap with. The buttons work in my other car and those do not in my 300TE.

I tested the resistance between the three terminals and either I missed the connection or there is no continuity. I'll check more carefully tomorrow.

Thanks!

__________________
82 300TD - 130k
68 280SL - 135k
91 300TE - (sold)
87 300 TD (sold)
89- 300E - Parts beast (sold)
90- 300E 2.6 (daughter's)

plus a couple of Toyotas and a Volvo