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proper application of dialectric grease on bus bars?

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by k1ngn0thing, Mar 22, 2018.

  1. k1ngn0thing

    k1ngn0thing Member

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    do you just cover the surface to prevent arcing to any part of it? both sides?
     
    #1 k1ngn0thing, Mar 22, 2018
  2. JC91006

    JC91006 Senior Member

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    You should probably not even bother with putting anything on the bus bars. It doesn't come from the factory with anything on it
     
    #2 JC91006, Mar 22, 2018
    Raytheeagle and Mendel Leisk like this.
  3. k1ngn0thing

    k1ngn0thing Member

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    they also want you to replace the whole pack for 3-4 grand whenever a code is thrown
     
    #3 k1ngn0thing, Mar 22, 2018
  4. JC91006

    JC91006 Senior Member

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    That happens in about 10 years.
     
    #4 JC91006, Mar 22, 2018
  5. k1ngn0thing

    k1ngn0thing Member

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    But corrosion doesn't take ten years, and if something does come up this can be easily ruled out if preventative measures are taken.
     
    #5 k1ngn0thing, Mar 22, 2018
  6. JC91006

    JC91006 Senior Member

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    I had a battery pack that was purchased in 2010 from Toyota, installer put dialectric grease on the main connectors. So far it seems to be performing nicely at 8 years old. But my 2010 Prius without any dialectic grease, also is performing flawlessly (although it seems to be a bit weak). Corrosion "might" be a contributing factor to a battery failing, but it's failure is probably due to time and deterioration of the battery cells.

    So I don't really see the benefits and you would need many many examples to get proper data.
     
    #6 JC91006, Mar 22, 2018
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  7. Mendel Leisk

    Mendel Leisk Senior Member

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    This is always my first thought. Ditto for battery posts, door hinges, spark plug boots. With door hinges I do very surgical application of lube, just into the joint.

    OTOH, underbody bolts, license plate screws: I drench in oil, before they turn into rust lumps.
     
    #7 Mendel Leisk, Mar 22, 2018
  8. valde3

    valde3 Senior Member

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    Don’t grease bas bars before installing them! That can very easily cause bad connection. And as it’s hard to grease after install normally they are not greased.
     
    #8 valde3, Mar 22, 2018
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