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Persistent P3013

Discussion in 'Gen 2 Prius Technical Discussion' started by dubseven, Jun 27, 2019.

  1. dubseven

    dubseven Junior Member

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    2007 Prius
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    Two
    Redoing the battery pack in a 2011 RX450h (not exactly a Gen2, but super similar, hoping y'all can help). Car has a persistent P3013 cell block 3 weak. I discharged/charged all the cells, they are all around 5ah, no weak cells, but the pack was WAY out of balance. Put it back together, still getting a P3013. Thought it could be the battery sensor module, replaced that with a brand new one, still no dice. Any advice?
     
    #1 dubseven, Jun 27, 2019
  2. TMR-JWAP

    TMR-JWAP Senior Member

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    Touring
    Does this have the 9.6 volt modules? Are you certain you worked on/checked Block 3? What methodology did you use to discharge/charge them? How many times? What were the results? Unfortunately, I've seen plenty of "around 5ah" module that are experiencing a single cell failure, but the other cells hide it when you only look at overall Ah. The voltage graph during the discharge tells a lot of info also. If you're seeing any of them drop ~1.3 volts fairly quickly, then hold steady, that's a solid indicator you have a bad/weak internal cell.
     
    #2 TMR-JWAP, Jun 27, 2019
    strawbrad likes this.
  3. dubseven

    dubseven Junior Member

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    Two
    Yes the 9.6V modules. Yes, I discharged and recharged each cell individually. 1A discharge, 1.5A charge. 5-10 cycles per cell.
     
    #3 dubseven, Jun 27, 2019
  4. ChrisFaehrtPrius

    ChrisFaehrtPrius Junior Member

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    II
    i'm guessing you already cleaned the corrosion off the connectors, if any?
     
    #4 ChrisFaehrtPrius, Jul 3, 2019
  5. dubseven

    dubseven Junior Member

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    2007 Prius
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    Two
    Yes
     
    #5 dubseven, Jul 3, 2019
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