DURR the low beams have to be on in order for fogs to come on. Nothing is wrong with the car.
You'd think there would be an interlock between the two switches. Oh well, this can stay up in case someone else is searching this solution.
if you want to do the fog light mod.
Toyota 4Runner Independent use of Fog Light Mod
Good idea. Running them independent doesn't make sense EXCEPT for they shut off with the high beams on. Sometimes you just want to throw lumens down the trail.