TPMS problem - one doesn't show up (?)
Purchased a set of new OEM 20-inch wheels, OEM TPM sensors off ebay, and Pirelli's from Discount Tire. After mounting to my 2015 GC Limited, the vehicle picked up three sensors almost immediately (LF, RF, RR). The left rear just shows a red area and a dash in the tire pressure display. I assumed a bad sensor and the ebay seller graciously overnighted a new sensor. So I pulled the wheel/tire in question and returned to Discount Tire. The tech there simply held a reader up to the valve and declared all good. He said to bring the vehicle in and they would "program" the vehicle to recognize the sensor. The next day I had them do this, at which time the display did not change; still no reading on the LR. He said I would need to put 7 to 20 miles on the vehicle and it would then "pop up." It didn't. Do I, in fact, have a bad sensor? Could it read okay on their handheld reader but not be recognized by the vehicle?