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Red triangle, brakes, hybrid warning: after cleaning hybrid fan and going over small bumps

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by wrothgar, Aug 19, 2018.

  1. wrothgar

    wrothgar Junior Member

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    I am thinking I have 2 issues here.

    After cleaning the hybrid fan on my gen ii (200 000 km, 2008, second owner....had it for 4 years, 100 000km), the next day the red triangle and brake lights came o on the dash, and the display showed "problem" and a car icon in the top right corner. This occurred immideately after going down hill and hitting a bump (on about a 30 km journey). I wasn't actually driving.

    Dealer found and dixed a corroded wire connection at the battery cooling fan...and claimed the car was fixed.

    Next day, same scenario: about 25 km of driving, bump on a downhill, same lights.

    The front driver wheel bearing had been done twice...I suspect a wheel sensor may be bad, but that's just a guess.

    I have a regular obdii reader...but not a mini vci.

    I have had issues with leaking in the hatch, that seems to be from half way up.

    Dealer says that Toyota's troubleshooting guide points to the "computer under the hybrid battery" being faulty, although they don't think that is the case.

    The second triangle came today, which is a Sunday, so I'm not able to call the dealer back. Normally I don't use the dealer for any maintenance.

    I'm looking for suggestions for how to narrow this down.

    Oil is fine, 12v reads 12.67 V from the batery...inverter pump recall was done a long time ago.

    Both times I wasn't driving, but it sounds like the same conditions that cause the prius to turn on the stability light.

    Posted via the PriusChat mobile app.
     
    #1 wrothgar, Aug 19, 2018
  2. bisco

    bisco cookie crumbler

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    i would start by diving back into the cooling fan, and inspecting every connection, since it is the last thing you touched.
     
    #2 bisco, Aug 19, 2018
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  3. Paul Schenck

    Paul Schenck Active Member

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    I would get to the bottom of the leaking situation taking everything out of the back except the battery. Your “small bump”report makes me think of splashing liquid on electronics. Especially after contacts were cleaned. I used to spray WD-40 on my spark plug wires on foggy mornings to start my 68 Cougar. As an electronics lab manager loose and compromised connections make for strange test results. If they recently inspected and cleaned contacts with a contact cleaner they would be even more sensitive to a splash of rusty water from say the battery pan? So I say focus on the leak and you’ll find the cause of this and many other future problems. My own Prius rear door leak was caused by a over enthusiastic cleaning dislodging the weather boot on the hatch electronics umbilical, an easy fix, silicone.


    iPhone ?
     
    #3 Paul Schenck, Aug 20, 2018
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  4. wrothgar

    wrothgar Junior Member

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    Thanks. I'll add some photos of the dealer's wire splice. I think it's done poorly.

    Posted via the PriusChat mobile app.
     
    #4 wrothgar, Aug 20, 2018
  5. wrothgar

    wrothgar Junior Member

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    I removed the plug at the bottom of the 12 V battery well a long time ago...no water pooling in there. Definitely leaks on passenger rear side of hatch.
     
    #5 wrothgar, Aug 20, 2018
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  6. wrothgar

    wrothgar Junior Member

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    Here are 3 images showing the dirty connector and broken pin...the quick splice (added yellow wire bridges the brown) and if you look closely, the yellow wire sheathing is completely intact. Is this the way a quick splice is supposed to work? Seems like it isn't right to me.

    upload_2018-8-20_13-43-19.png


    upload_2018-8-20_13-43-36.png
    upload_2018-8-20_13-43-49.png
     
    #6 wrothgar, Aug 20, 2018
  7. ITBland

    ITBland Active Member

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    No. the quick splice should cut the insulation, but not the wire--looks like the wrong size quick splice was used--Blue is usually for 18-14 AWG wires, those wires don't appear to be that big. If you have to use a quick splice, Red would have been the better choice (typically for 18-22 AWG wires.)
     
    #7 ITBland, Aug 20, 2018
    Last edited: Aug 20, 2018
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  8. ITBland

    ITBland Active Member

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    +1 to this!
     
    #8 ITBland, Aug 20, 2018
  9. Paul Schenck

    Paul Schenck Active Member

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    It does look like that connector has seen some moisture. I’d splice around it with a moisture proof soldered connection?


    iPhone ?
     
    #9 Paul Schenck, Aug 20, 2018
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  10. wrothgar

    wrothgar Junior Member

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    Seems to have been the issue. I now need to trace the leaks in the trunk....I think there are a few posts on doing that. Thanks!

    Posted via the PriusChat mobile app.
     
    #10 wrothgar, Aug 21, 2018
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  11. bisco

    bisco cookie crumbler

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    rain gutter seam, hatch hinges.
     
    #11 bisco, Aug 21, 2018
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  12. wrothgar

    wrothgar Junior Member

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    Is silicone sealant good to use, or is there something better?

    Posted via the PriusChat mobile app.
     
    #12 wrothgar, Aug 21, 2018
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  13. bisco

    bisco cookie crumbler

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    iirc, that is what most have used.
     
    #13 bisco, Aug 21, 2018
  14. wrothgar

    wrothgar Junior Member

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    #14 wrothgar, Aug 22, 2018
  15. bisco

    bisco cookie crumbler

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    silicone
     
    #15 bisco, Aug 22, 2018
  16. ITBland

    ITBland Active Member

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    iirc = If I Remember Correctly, not some mythical brand of super sealant :)
     
    #16 ITBland, Aug 22, 2018
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  17. wrothgar

    wrothgar Junior Member

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    #17 wrothgar, Sep 2, 2018
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