They have to be activated (synced). In other words, they have to be learned to the tpms control module. If your sensors are not activated the tpms light blinks for a couple of seconds at start up and then goes out. Needless to say, your info display will show no reading of the tire pressure (s).White-Rush wrote:
BTW, does anyone know if new TPMS sensors are plug and play or do they have to be synced by the dealer at the time of install?