Left MFS - Cleaned and adjusted contacts - fixed flickering dash lights
Light the previous poster, I removed Left Multi-Function Switch (MFS) which is the left control for headlights, dash dimmer, etc, and cleaned the contacts (the little pins for the electrical connector). In addition, I noticed one of the pins was bent a bit. Used a very small needle nose plier and straightened it up. I let the contact cleaner dry and put it back together. To my complete surprise, no more crazy dash light brightness changes while driving at night. Will report back if the fix does not last, but previously I was experiencing the dash light insanity on pretty much every drive at night.
One quick note on disassembly of the Left MFS. The three "bolts" that hold together the shroud around the steering column are actually three torx head screws that you remove from the bottom. The whole thing came apart quite easily once you find the right torx sizes - mine required two different sizes.