-- Update - The issue was a clogged vacuum hose going to the front hub to lock it in and out. Dealership fixed it quickly, and haven't had a problem since! --
Went to take delivery of my new 2016 Ford F-150. Waiting 5-6 weeks. Transmission or Transfer case problems. Had to leave it at the dealership, and took a loaner home. Disappointing, but confident dealer will get it repaired.