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Aux battery info.

Discussion in 'Gen 2 Prius Technical Discussion' started by gen 2 owner, Mar 1, 2020.

  1. gen 2 owner

    gen 2 owner Junior Member

    Joined:
    Apr 27, 2015
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    Location:
    ontario
    Vehicle:
    2005 Prius
    Model:
    Two
    Hello.
    I own a 2005 prius and just installed my third 12v battery.
    That is approx. a life of 5yrs per battery, is this normal for a prius.
    The car is driven to work every day and once on the highway for approx. 45 min's each week.
    The last battery was bought from toyota and lasted 3 yrs, exactly.
    When i put the new battery in, i measured the d.c. current with the hatch light off, smart key off, it measured 147ma, is this normal.

    One other question, when i changed the battery i found approx. 1.5 inches of frozen water below the battery tray.
    Has anyone else had water in this area.
    I think it is leaking in, maybe from the h.v battery fan duct, bottom of car, right taillight when i wash the car.
    One other question, my illumination lights for the buttons around the lcd display ittermittently flash on and off, these i remember are: display, audio, climate, etc, 4 in total.

    Any thoughts would be appreciated.

    Thanks.
     
    #1 gen 2 owner, Mar 1, 2020
  2. ChapmanF

    ChapmanF Senior Member

    Joined:
    Mar 30, 2008
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    Location:
    Indiana, USA
    Vehicle:
    2010 Prius
    Model:
    IV
    The usual water ingress location seems to be hairline cracks that develop in the roof-panel-to-quarter-panel seams just forward of the top of the hatch. Lifting the garnish that covers the seams there may show the tiny cracks.

    It is surprising how much water can enter through barely-visible cracks.
     
    #2 ChapmanF, Mar 2, 2020
  3. gen 2 owner

    gen 2 owner Junior Member

    Joined:
    Apr 27, 2015
    10
    0
    0
    Location:
    ontario
    Vehicle:
    2005 Prius
    Model:
    Two
    Thank you Chapman for the info, when it is warmer outside i will check the panel.
    Thank again.
     
    #3 gen 2 owner, Mar 4, 2020
  4. bisco

    bisco cookie crumbler

    Joined:
    May 11, 2005
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    Location:
    boston
    Vehicle:
    2012 Prius Plug-in
    Model:
    Plug-in Base
    normal battery life, idk the normal draw with everything off.
     
    #4 bisco, Mar 4, 2020
  5. Aegean

    Aegean Active Member

    Joined:
    Aug 18, 2019
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    Location:
    Alexandria VA
    Vehicle:
    2006 Prius
    Model:
    ----USA----
    There are two rubber plugs, one on the bottom of the right cavity (Aux battery) and one on the left under the little compartment. I have removed both in case any water finds it’s way there.
     
    #5 Aegean, Mar 4, 2020
  6. edthefox5

    edthefox5 Senior Member

    Joined:
    Jul 25, 2007
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    Location:
    Clearwater, Florida
    Vehicle:
    2007 Prius
    Model:
    Two
    If you garage the car I would pull the plugs out but my car sometimes sits out so I just drilled a 3/8 hole in the plugs to drain. If not the mice will turn it into a Days Inn. They love the taste of Prius wiring.
     
    #6 edthefox5, Mar 22, 2020
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