I haven't been made aware of any spare tires with sensors... FWIW, the
sensors "go to sleep" in the abscence of centrifugal force to conserve
sensor battery life.

Ford is still changing tire pressure sensors but your 07 should have the
band mounted sensors locatedin the well of the wheel rim and located 180
degrees from the valve stem. This system has been remarkably trouble free
except when some tire buster that doesn't keep abreast of his trade damages
a sensor by using improper technique when demounting a tire or breaking a
bead.

For most of the 07 model year line up, tire pressure sensing functions are
in the SJB (smart Junction Box) located usually inside the passenger
compartment. A scan tool capable of communicating with proprietary modules
is required...  having the ability to display live data stream is a plus.
All the same, to properly identify a faulty sensor, one would want to
retrain the sensors in the correct order in case the tires have been rotated
without the benefit of retraining the senor positions.