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Tire pressure warning system reset not working?

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by 2009Prius, Jul 10, 2011.

  1. 2009Prius

    2009Prius A Wimpy DIYer

    Joined:
    Mar 25, 2009
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    Location:
    USA
    Vehicle:
    2009 Prius
    Just rotated the tires and adjusted pressure as part of 20K service. I dug up the user's manual and followed the instruction to reset the tire pressure warning system:
    IG-ON
    Push and hold reset button
    Now the tire warning light was supposed to blink slowly 3 times, but it didn't. It just lights up, and then turns off some time later, while I am still holding down the reset button.

    What did I do wrong? :confused: