Put the fob that was detected to be low (with new battery) in & drive the car....
same thing happened to our Escape & cleared with using the offending fob.
We also replaced the Primacy tires but at 33K. My wife complained about traction in the rain.
The Tour 54's made a huge difference in that regard. They ride well & the car overall feels overall feels better. Gas mileage is more about driving habits so I can't comment on it.