[MachDrive]

The tire sensor attached to that rim may be kaput.
They sometimes get damaged when people fix flats, change rims, etc.
If it just failed on its own, it should be covered under warranty.

 

[MachDrive]

LOL, I should know inflation was the first thing you checked. So, as you say, sounds like the sensor bit the dust. I'm curious as to what type of sensor it is, ie is it attached to the valve stem or something else.

according to Ford Parts, it looks like a valve-stem sensor. Some of my older Fords had the pressure box thing.

 

[MachDrive]

I wonder if it's a fault with your sensor? I had the low pressure show up one time, inflated the tire to proper spec and after driving for a mile or so it cleared.

Note, on your steering wheel on the right hand side the "OK" button, press that and it should clear.

After pressing to OK. Drive at normal local speeds for about a mile. The tires should register properly.