When you first start the engine, is the TPMS light solid or is it flashing for a minute or so and then becomes solid? BTW, which TPMS scan tool do you have (manufacturer and model #)?Yup thats exactly what I mean. Is weird because everything was good until i replaced one because it was leaking air, before changing it everything was normal. I had it replaced by a normal valve until i bough the new one. Of course the light will come up since i dont have a TPMS semsr in one of my tires. Thinking it was going to get fixed once repkaced but for my surprise nothing still there. So if you back track everything nothing changed just a simple TPMS. So after buying one I replaced all of them and my scanner detects all of them with good battery and PSI and al is there. But the light BOOM!!!! Still there aaaarrrgggg!!!!
EDIT: You said earlier that you bought "Schrader" sensors from Autozone, correct? I looked at the available options on the Autozone website and it looks like all of them say "programming tool required"--which specific sensors did you buy (model #)?