Welcome to the Forum.
What you are referring to is the LED Signature Lighting. That was not available on the 2016 Base model, only on the XLT and up. Did you buy the Explorer new? If not, perhaps the previous owner may have done something to enable them. If I recall correctly from reading other posts, the Base model doesn't even have the LEDs in there.
EDIT: Found this thread;
2016+ Base Model, Add LED Signature Lights?
Peter