Another non-working 4wd thread, I did search

Ok, here is the issue. 2003 Taco, push button on the transfer case shifter.

4wd hi does NOT work
4wd lo DOES work, I jacked up the truck on all 4 corners and the front driveshaft and wheels get power. I also noticed that I can shift the transfer case shifter into 4wd lo without the button being pushed and everything engages and the light comes on. With that said I can rule out the ADD right?

Not sure what to check next, help snow is coming.

 

Fixed, mods can delete if you would like.

I was overthinking the solution. The connector on the push button had come apart