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2006 HV ECU Question

Discussion in 'Gen 2 Prius Technical Discussion' started by Knightrider, Mar 7, 2019.

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  1. landspeed

    landspeed Active Member

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    I agree fully; the ECU is almost unbreakable (except when it does the plasma-arc thing); even then it usually works and could probably be repaired given how much they cost new. Toyota says 'replace the battery ECU' - they certainly make a profit looking at it like that, and they can then say 'you have a new ECU, but you need a new battery'.
     
    #21 landspeed, Mar 8, 2019
  2. Skibob

    Skibob Senior Member

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    I don’t think I have heard of water getting into the battery. Number one reason seems to be electrolytes leaking.
     
    #22 Skibob, Mar 8, 2019
  3. Knightrider

    Knightrider Member

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    Location:
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    Vehicle:
    2005 Prius
    Model:
    II
    They are keeping their 06
    The 05 is what I am purchasing- it has been diag w a bad HV Battery

    The 06 is what I will be looking into w the above flow chart.
     
    #23 Knightrider, Mar 8, 2019
  4. Knightrider

    Knightrider Member

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    I suppose it would need to be 2" or more deep to pool up in the basin- and fill the spare tire well before that.....
     
    #24 Knightrider, Mar 8, 2019
  5. Skibob

    Skibob Senior Member

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    I don’t know if the dealer can actually see the board without actually removing the battery or not. When you have the battery out take a picture of the board and post it here. There are a few guys that can tell if the board got fried from a picture, or at least can verify is they see the burn spots.

    I like this video for the procedure of removing the battery. It gets the top cover off but doesn’t go into the ECM part.
     
    #25 Skibob, Mar 8, 2019
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