Guys, the OP is not talking about the tire pressure itself, but the newer 2013 and up setup that shows which tire has which pressure in it. To make the system work, it has to know which sensor is at which position. On several GM cars, there's a relearn like was described where you start at the RF and work around counter clockwise ending up at the LF that involved letting air out until the horn honks. The JK does not seem to have any similar procedure, but I have read in multiple places it picks up the sensor from a wheel well mounted pickup so it relates on the fly. Haven't had a test to fully vet that yet and confirm it.
2013 JKU Sahara, Gecko Green, loaded up
AEV 2.5XT lift, 315/70/17 Duratracs, AEV Pintler wheels, front/rear bumpers and hood, Warn 9.5cti-s, Teraflex carrier/hinge, Yukon 4.56 gears