You are correct. TPMS was optional on 2005-2007. It uses indirect TPMS uses the ABS sensors to detect the difference in rotation between tires to trigger the light.Bookworm wrote: ↑Thu Mar 24, 2022 7:06 pm I'm pretty sure there are no actual TPMS sensors in 2007 and below. They judge tire pressure by rotation, set by the initial drive cycle after dash light reset. I've managed to have tires with really low pressure -not- trigger off the light. I'm certain that 09 and up have them. No clue about 08.