2018 f150 was fine a day ago. Now won’t start and no longer in park as was left a day ago. Battery appears fine. Disconnected and reconnected battery but no change to situation (remains unable to turnover and steering wheel moves and won’t go to ‘park’. Getting multiple warning notices on screen. 1) Hill descent control fault, 2) Hill start assist not available, 3) Service advance trac, 4) See Manual, 5) Park Brake Limited Function Service Required, Ford's brake system

 

The first suspect is your battery. Vehicle won't start and you're getting numerous unrelated faults usually means a battery on its last leg. It won't start anyway if it's not in Park or Neutral - what gear is it in, and why don't you put it in Park?

 

Why isn't the truck in park? What gear is it in? Truck won't even attempt to start unless it is in park or neutral.

 

Agreed with possible battery issues. Also, I received weird messages like that one time but my truck still started. It turned out the be my front driver side turn signal bulb. Had come loose from the socket and had fallen inside the light assembly. Turn on your hazards and walk around the truck to make sure all your signal bulbs are working properly.

 

My bet, won't go in park because it's at a bad angle. have someone rock you back and forth. As far as other issues, my bet is needs a new battery.

 

Check for debris in he shifter assembly preventing the shifter from going into park.