Early warning sign of a dying 12 V battery

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by 2009Prius, Aug 2, 2014.

  1. 2009Prius

    2009Prius A Wimpy DIYer

    Joined:
    Mar 25, 2009
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    Location:
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    Vehicle:
    2009 Prius
    I run PriiDash daily so I always turn the car IG-ON first, not READY. Recently the MFD started to show some warnings on the screen during IG-ON after the car sat in the garage over the weekend. Eventually it became every morning, but the car still started fine. I think this (IG-ON first) is a good way to get an early warning sign of a dying 12 V battery. More details here:

    12V battery log | PriusChat
     
    #1 2009Prius, Aug 2, 2014
    dorunron likes this.
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