Short backstory I believe the BAS/ESP light was on prior to me buying the car & changing my TPS sensors and factory wheels/tires but I cant remember (Possible YAW sensor?). Yes I've done the BAS/ESP reset multiple time.. anyway back to the TPS (What I think is the fault with the BAS/ESP because my unit is probably detecting no sensors so low tire pressure?) So originally I went to a local tire shop, purchased rims, tires, and sensors. I cant remember what they told me because it was so long ago, but either they couldn't connect to the unit to program, or couldn't connect to the old sensors or both.. anyway I told them install new sensors (this was before they realized they could not connect to the TPS) Im assuming they didn't have the right equipment as I was investigating similar situations on the site. Basically now I'm left with 4 tires, no sensors, and no access to the old sensors to possibly clone. Where do I go from here can I purchase new sensors with the right MHZ frequency and can another shop possibly program these correctly? If I call around what tool would they need to do this?