When I got my snows put on recently ( I bought another set of OEM rims new without sensors ) they asked me what I wanted to do for sensors ( Toyota, their aftermarket units for Toyota / Lexus, or none of course ). The benefit of the OEM ones apparently, they could clone them - so no need to drop back in there each R&R period for programming.

The drawback - price. I went with their aftermarket ones, no charge for them to point the Autel reader at each wheel, pick up the sensor codes and reset the system via OBD port at each change, took the guy about 3 mins. Might upgrade my Autel Reader to one of those in future.

Anyway - from my understanding as long as you install a 5th new OEM sensor into the spare it can be cloned to the existing OEM units already on there ?