The tpms must be 're learned' with every tire rotation.......your dealer evidently forgot......just stop in....it only takes a minute or two using the tool pictured.Let me get this straight, when the tires are rotated by the dealer with a oil change and scheduled maint. the car computer needs to be re-learned as to what sensors are where? Been chasing a low tire light for the left front when actually the left rear was the culprit. Guess the dealership has a real tool working for them. Guess that will be question to ask the service writer at the next rotation.