06 and up it's standard on all cars and trucks I think by 08 or late 07 is on every car and truck sold in US

 

can anyone give me some advice on what to do with a "check tpm system" on my 08 town & country. The dealer has no clue.

 

My 08 sebring the same and also the dealer has no clue. They changed the "Little box" at my expense of course to try and see if maybe it would go away. It did not. I changed three sensors on each tire and still there. The pressures are correct and drove around a while. No red light comes on, just the message. I can not keep giving them money for them to keep trying to see if they get lucky. The message is "TPM system warning" and it comes on every time I turn on the car. I have to push reset to get the tire pressures out of the screen. If anybody can figure this out it would be great.