It's getting cold outside...
What is interesting is if you do a search on the TPMS, a good chunk of the threads start each year around OCT or NOV. How do I know? This week in southern MN we received our first low-30's temp, and my TPMS light came on. Came on here to do a little research and found that many times the light will go because your pressure(s) are down due to the cold.
So, I filled up all 5 of my tires, and now no more light.
Cold Temps=Lower tire pressure=TPMS light. Simple as that.