Just found a bunch of similar posts, some from w124's, some from other models. Most don't have an answer. Found someone who had this same problem; turned out to be a bad fuse for comfort circuitry despite the fuse appearing to be good.

I'm going to recheck all fuses later tonight, as well as test for power.

__________________
________________________
2002 Mercedes-Benz E320 4Matic
1995 Mercedes-Benz E320 Wagon
2005 Land Rover LR3 V8 SE
1999 Audi A8 4.2L quattro