I would assume the '16 is the same. My '05 and my '08 did so it's probably been that way ever since the inception of auto headlights.
My old 2006 Limited did not have DRL's, which I think is the factor here. What I'm thinking is that my DRL's are set to ON and they might be turning on and off based on outside lighting conditions. So maybe the headlights are on early in the morning but change to DRL's when coming out of the shade or facing the sunrise. At the same time, my fog lights are coming on and off as the lights change from DRL's to regular headlights. I'm still testing this theory as it's hard to replicate those conditions.
"my fog lights are coming on and off as the lights change from DRL's to regular headlights."
That's the likely scenario and next time you can confirm by looking at the dash and see if both night lights and fogs icon shows up on the display or not.
Hate to spoil your fun but the symbols are all listed on pages 95,96 and 97 of the Manual.OK. Now all I have to do is learn what all the lights and symbols mean. My wife drives the car and we've only had it a few weeks. That gives me a good reason to drive her Explorer while she is forced to drive my ( less nice ) Suburban.