I had the same issue with my 2017. Turned out the 4x4 knob on the wheels where set to manual. Turned them to auto it went away.
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Purchased a 2017, F350 CC FX4 160WB in October. Had 206 miles on the odo.
Lariat ultimate package
5th Wheel prep
Trailer tow package
Chrome package
Trailer technology package (360 cameras)
Leveling kit
Spray in Bedliner
3.55 gears with 20 inch tires
Sticker was $73k. Paid $64k.
Happy...