Spare tire is on sensor also

[f5fstop]

Proved it, when I rotated my tires in March.
This system is not looking for a particular sensor at a corner, it is looking for four sensor readings from four identified sensors.
We did one at work, and no re-learn (program) was required.
If the system was like that used on Vettes, Caddies, etc., where it displayed readings for each corner of the vehicle, then mixing them around would require a relearn.
However, if you add the spare into the mix, and remove one of the four on the ground, the systems does not recognize a sensor (spare) and requires the re-learn (program) procedure.