I just purchased a 2005 sc430 and the seller says it "has tire pressure sensors". I see on the forum that several talk about their tire sensors but I think my car has an after market monitor. There are sensors on the tires BUT the seller says you "have to plug this into the cigarette lighter". It then shows the pressure on all the tires. Totally after market in my opinion. Did the 2005 have an option for tire sensors?