My driver’* side seat heater is not working. You press the button to turn it on, and in a couple seconds it auto shuts off. The dealer wants $100 to just look at it, and not even to fix it.. Is this something I can diagnose and resolve myself..?

chances are that the element wiring has shorted out. Archon posted a write up and a fix for the heated seats

Awsome, where do I find this write-up?