I’m fairly certain mine is the ultimate since I have navigation and some other things that are on only the ultimate trim. And I’ve looked at the fog lights and there are wires that go to the leds but I can’t make them turn onWhat trim level is your 2015 3.8 ?
If I'm not mistaken only the ultimate trim level comes stock with the L.E.D. D.R.L's.
They don't operate with the hand brake on or if the headlamps are on, they should come on with the switch set to parking lamps on, or set to auto if there's enough light to make the headlamps turn off.
The other trim levels come with "fake" L.E.D.'s, they look functional but they are not.