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ABS warning lights but no codes

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by jm98, Nov 23, 2017.

  1. jm98

    jm98 Member

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    I am starting to get random ABS trio warning lights but no codes on reader. Not sure where to start here.. I am seeing this when I use radio in ACC mode for a while, weather is damp and now in cooler nights.

    I do have techstream installed and cable ready. Just need to install driver.

    [​IMG]
     
    #1 jm98, Nov 23, 2017
  2. jerrymildred

    jerrymildred Senior Member

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    Do not use radio in ACC mode. You run down the 12V battery and weird things happen, up to and including inability to start the car. Prius 12V is much much smaller than the one in a gasser. Run the radio in Ready mode.
     
    #2 jerrymildred, Nov 23, 2017
  3. jm98

    jm98 Member

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    Got it! For most part I do listen in run mode.
     
    #3 jm98, Nov 23, 2017
    jerrymildred likes this.
  4. jerrymildred

    jerrymildred Senior Member

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    Sounds good. You may want to check the condition of the 12V if it continues giving problems. By all means, check for codes with Techstream when you get it running. But I'm pretty sure you'll be OK if you haven run the 12V down too low.
     
    #4 jerrymildred, Nov 23, 2017
  5. jm98

    jm98 Member

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    Looks like 12V battery might be an issue. Bit a history on it, I got Optima brand 12V in 2015 from Amazon but had it sitting in garage for few months before deciding to plug in in early 2016. However its been couple years and should be charged okay by now as I have several 1000 miles road trips since then.
     
    #5 jm98, Nov 27, 2017
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