Traction Battery & Fan Vents Preventive Maintenance

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by Prius_Angie, Apr 18, 2020.

  1. Prius_Angie

    Prius_Angie Active Member

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    P_20200216_145537.jpg I just bought a $1000 white beat-up 2010 Prius with 298,000 miles. A lot of work to be done. Great 65'F day outside for a 5hour fun filled day of maintenance to the traction battery & fan/vent. Electric drill and magnetic bits saved loads of time.

    UPHOLSTERY TEARDOWN
    - filthy upholstery
    - cleaned out spare tirewell; 2x rubber plugs come out for easy hosing down of bay
    - unplug both batteries: HV traction and 12V
    - found $0.85 behind seat cushions

    FAN/VENTS REMOVAL
    - filthy/dusty vents; all went into the bath tub for a thorough washing
    - fan was heavy with dog and human hair
    - used bleach mix & q-tip buds to spray bottle clean fan. Best to hold fan facing down and to spray up into the fan; try your best not to get the motor wet. I've become efficient over the years--- down to <5min clean job

    TRACTION BATTERY
    - filthy battery terminals; brush down with plastic brush
    - Electric drill and magnetic bits saved loads of time for removal.
    - do not use drill to em-place nuts; damage fear of cross threading and overstress on module threads.
    - sand down those brass copper bus bars; i use a 3M material akin to dishwashing pad
    - i have at times replaced a few copper bus bars with zinc coated; but my engineer friends tell me copper is ~4 times a better conductor over zinc; but zinc corrodes less: tradeoffs.
    - 2 part solution clean of vinegar, then stabilize with baking soda solution
    - refit with dialectic grease 9mm socket; hand tighten

    ROAD TEST
    - good to go on first try; i must be getting a little better at this process. ; )
    - i shall revisit this compartment at around ~400,000 miles.
    - time for margaritaville!


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    #1 Prius_Angie, Apr 18, 2020
    Last edited: Apr 18, 2020
  2. ASRDogman

    ASRDogman Senior Member

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    Seems like a good deal. How's the motor?
    you've already done a lot of work on it!
     
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  3. Prius_Angie

    Prius_Angie Active Member

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  4. ASRDogman

    ASRDogman Senior Member

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    Well, hopefully, no oil burning. Too bad there's no easy way to replace the valve guide seals.
    How is the cooler? Was/is it clogged? Was the intake full of oil? EGRN passages clogged?
     
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  5. Prius_Angie

    Prius_Angie Active Member

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    This EGR system fix will be content for another thread, but ...
    there was evidence of HUGE oil burning; Im contemplating an Oil Catch Can
    the entire EGR system was clogged; pipe clogged; valve stuck, cooler like concrete. I undid the cooler in 2 hours with chemicals, a drill and coat hanger; way too much work. Can drive prius on highway at 70mph, but still have some engine ping/misfires. Not out of the woods yet. EGR valve in the mail.
    P_20200308_150242.jpg P_20200308_125753.jpg P_20200308_165003.jpg
     

    Attached Files:

  6. Raytheeagle

    Raytheeagle Senior Member

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    Why not use a pressure washer instead of sluggin it out for 2 hours:whistle:?

    10 minutes and you'd have been all set;).

    Maybe next time:).

    There will always be that, just remember it(y).
     
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  7. Prius_Angie

    Prius_Angie Active Member

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    RTE,
    I read a few points to that pressure washing online & on Priuschat, but just after I put 2hours into the cooler effort.
    too bad i didnt see it before :(
    but rest assured, i will pressure wash it next time I come across a concrete EGR cooler--- thanks.
     
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  8. Raytheeagle

    Raytheeagle Senior Member

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    The pressure washer is truly the best tool set up to clean the egr cooler;).

    We once did 3 coolers in 15 minutes at one of the Bay Area meetups:).

    Good luck with the rest of your maintenance(y).
     
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