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Low Tire Pressure Warning Light is ON? I have Good tire pressure in all tires? What's Wrong?

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by ski.dive, Jul 12, 2015.

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  1. wjtracy

    wjtracy Senior Member

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    Yeah the little batteries in there are probably like car 12v batteries: when the weather is cold you find out they were weak...

    RobH did you go with OEM Toyota or just what they gave you?
     
    #21 wjtracy, Jan 7, 2016
  2. RobH

    RobH Senior Member

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    Dorman 974-033 from Amazon. About $30 each. Ordered tires online (Tirerack?) and had the sensors installed at the same time. Used Techstream to register the new ids.

    I got the old sensors back and took one apart. The battery is embedded in some sort of epoxy. With a lot of time/care, you could probably dig out the old battery and replace it.
     
    #22 RobH, Jan 7, 2016
  3. Mendel Leisk

    Mendel Leisk EGR Fanatic

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    Maybe embedding it in epoxy improves it's longevity, seals out air? And typically dooms it once the battery does fail.

    That would get us out of a world of hurt.
     
    #23 Mendel Leisk, Jan 7, 2016
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