Hybrid Battery Replaced, still getting VSC, red triangle light and check engine light

Discussion in 'Gen 2 Prius Technical Discussion' started by ssolis, Feb 27, 2017.

  1. ssolis

    ssolis New Member

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    2007 prius. Replaced the HB week ago, Dorman hybrid battery, car drives good with no issues for 20 mins then the same symptoms appear as before and all light on dash board come on.
     
  2. bisco

    bisco cookie crumbler

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    welcome!
    perhaps there's another issue. how is the 12v health?
     
  3. JC91006

    JC91006 Senior Member

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    You need to get the codes read, it can be a bad hv battery from Dorman
     
  4. ssolis

    ssolis New Member

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    The 12v battery is brand new.

    How can I check of the hybrid battery is faulty if its brand new.
     
  5. greasemonkey007

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    The hybrid battery is most likely reconditioned, not brand new. However, there are a number of possible causes. You need the diagnostic trouble codes read from either a dealership or someone with the proper Toyota software. Or you can spend about $30 and get Techstream and do it yourself.
    There could have been another issue besides the battery, or you could have gotten a faulty one. Without the codes, you're just guessing.
     
  6. HBS

    HBS Member

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    Did you swap the battery yourself? The most common problem I see is related to people not pushing down on the lever of the orange plug/disconvect after installing the plug and rotating the lever to the vertical position.
     
  7. JC91006

    JC91006 Senior Member

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    He already drove for 20 minutes
     
  8. ericbecky

    ericbecky Hybrid Battery Hero

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    Get the codes.
    Double check all connections.
    Did you use a torque wrench to properly torque the hv connections? Or did you simply guess "by feel"?
     
  9. FuSuya

    FuSuya New Member

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    I'm having the same issue after I switched out my HV battery. All the lights have come on 20 minutes later. Any thoughts on why this occurred? I'm certain the battery is in good condition.
     
  10. dolj

    dolj Senior Member

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  11. ericbecky

    ericbecky Hybrid Battery Hero

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    Spend a little money on some inexpensive equipment so you can read error codes and see live data.

    Cost you under $75.

    The codes will point you in the right direction.
    The live data can help confirm your assumptions.

    A few ides of common errors and thinks that are overlooked.
    Did you use a torque wrench and properly torque the nuts for the module positive and negative terminals?

    Did you properly torque the work 4 nuts on the posts of the contactors?

    Did you fully inspect the voltage sensing wires on each of the 14 blocks?

    Did you check the main voltage sensing harness plug to make sure it was free of corrosion?
     
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  12. Leighton

    Leighton New Member

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    I’ve replaced my HB twice with a rebuilt one locally. Ran just fine like it should for about a day, then same codes and red triangle. Had the battery tested and all the cells were perfect. Took it into Toyota and they said I need to replace my engine for some reason they could not tell me relating the oil to the HV system and causing a HV fault. Am I running too thick of oil? If I don’t run thicker oil it just seams to burn more oil every 2000 miles. Toyota just handed me a $6000 quote to fix my $4000 car haha... Any thoughts on what to do before I sell it?
     
  13. Prodigyplace

    Prodigyplace Senior Member

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    To my knowledge, the engine oil should have nothing to do with the HV system. Their are 2 cooling systems though and they need the proper Toyota coolant.
     
  14. ericbecky

    ericbecky Hybrid Battery Hero

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    Leighton.
    Yeah. I'm a bit confused. Oil and the HV system?
    There must be some missing information here that would better explain the situation.

    "...They said I need to replace my engine for some reason they could not tell me ...."
    This is not acceptable.
    You are the customer.
    If someone wants you to spend thousands of dollars on a repair, and you paid them for their advice, you deserve a full, detailed explanation.
     
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  15. FlyFast93

    FlyFast93 New Member

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    Current codes or codes in history?
    I had codes remain in history for a while (200miles) after HV change.
    Agree with advice to get a code reader...simple and effective.


    iPhone ?
     
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