TPMS light should be OFF

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by Frontporch, Dec 16, 2025 at 4:01 PM.

  1. Frontporch

    Frontporch Active Member

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    Vehicle:
    2012 Prius
    Model:
    Four
    I replaced my TPMS sensors in each tire this summer.... Worked without issue for months.

    The light is now on and I immediately assumed that a cheap sensor was bad. Connected techstream and saw several pressure values. All seemed reasonable. It looks like the Low threshold (sorry I dont remember the name) was around 26 PSI. I think all of my tires were around 31-34 PSI and some other indicator pressure (there were four values) were all slightly different but very high... 28-30.

    I would like to do a sensible reset of this system. If I verify all cold pressures are around 35PSI should I be able to use the TPMS reset to get that light off? Not really sure how it works. I didn't find it in the owner's manual at first glance. I also saw temp readings that were similar to the outside temp 30 degrees. I hope cold is good for a reset.

    Thanks!
     
  2. bisco

    bisco cookie crumbler

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    idk, but definitely put a gauge on the tyres, cold makes the pressure drop
     
  3. Brian1954

    Brian1954 Senior Member

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    Post a picture taken of the Techstream data for the tire sensors.