Hello,
I have made similar thing few month ago, reading data sended from arduino device (made by myself) over bluetooth. In my case I have used classic bluetooth solution for HC05 module using examples available on this forum and help of administrator Mr Erel. In fact some aspects are still not solved.
Probably you will overtake quickly basics, if not let me know.
Interesting question is how can you read TPMS sensors ? Can you do it for specific car only or you have done general perpouse device ?
Kind regarsa
TomKluz