Yep, sensors need to be programmed. Only 4 at a time, so a fifth sensor needs to be programmed at the dealer once the wheel is put on.
It only take a minute to program, but its another trip to the dealer.
Is this for the spare? I wonder if the spare already has a sensor on it??
The spare does not come with a sensor, and adding one may cause a problem. If you have the Nav package it reads out pressure on each on the four tires on the ground. The fifth sensor may confuse things.