Bad hybrid battery problems

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by Michael K, Jul 25, 2014.

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  1. Michael K

    Michael K Junior Member

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    The engine is the one thing that I know has been taken perfect care of. The carfax had oil changes every 10k and I'd hate to swap the engine with one that hasn't taken care of properly. I think driving the car with a bad battery was the reason the electronics in the transmission failed because it drove just fine at first but started acting up after about 200 miles with the dead battery. I guess I will NEVER trust that guy again.
     
    #41 Michael K, Jul 31, 2014
  2. Patrick Wong

    Patrick Wong DIY Enthusiast

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    Well, I wouldn't say that a record of 10K mile oil changes means the engine has been taken care of "perfectly". Before you make that assumption I suggest you have a cylinder leakdown test performed to see how good that engine with 256K miles really is.
     
    #42 Patrick Wong, Jul 31, 2014
  3. Michael K

    Michael K Junior Member

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    I mean, I've known Toyota engines to run for 700k+. That is one thing that Toyota does very well. The CVT seems to have issues around 250k as well as inverter problems at 250k. I sourced a local Prius transmission for $136 with 120k and can have it by tonight. They also have an inverter in stock from the same car... Actually, they have every part from a Prius EXCEPT the hv battery (had called on that already).
     
    #43 Michael K, Jul 31, 2014
  4. bisco

    bisco cookie crumbler

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    i still admire your tenacity!:p
     
    #44 bisco, Jul 31, 2014
  5. Michael K

    Michael K Junior Member

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    Sadly you were right, this has turned into a project... wasn't supposed to be but it has...
     
    #45 Michael K, Jul 31, 2014
  6. Taimur

    Taimur New Member

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    Hello everyone I am new.... Don't know much to use this site...... I drive prius 2011 3rd Gen. Yesterday while driving I heard a bang sound and after that car was filled with smoke arising from battery pack.... I de-assembled the battery pack, cell number 20 got exploded, damaging 19 and 21. Cooling fan is working perfectly fine, All battery cells are showing 7.8 or 7.7.... The one got exploded is now at 6.4....i changed three cells now it's working fine but I am worried why it exploded at first instance.
     
    #46 Taimur, Jun 4, 2019
  7. ericbecky

    ericbecky Hybrid Battery Hero

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    How many miles on it?
    How long have you owned it?

    Has the battery been worked on before?
     
    #47 ericbecky, Jun 5, 2019
  8. strawbrad

    strawbrad http://minnesotahybridbatteries.com

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    That module had a dead cell in it that was producing excess gas. Sometimes the safety vents do not open in time to prevent the plastic case from blowing.
     
    #48 strawbrad, Jun 5, 2019
  9. Taimur

    Taimur New Member

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    Thanks for your reply, it has completed 83000 km and I bought it used, once I bought it was 45000 km.

    Do I need to do anything else as precaution?
     
    #49 Taimur, Jun 6, 2019
    Last edited by a moderator: Jun 6, 2019
  10. Taimur

    Taimur New Member

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    No work done in battery before
     
    #50 Taimur, Jun 6, 2019
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