no battery & a/c info after lose power on 12volt battery

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by fileaudio, Jan 28, 2015.

  1. fileaudio

    fileaudio Member

    Joined:
    May 23, 2014
    109
    58
    8
    Location:
    El paso texas
    Vehicle:
    2016 Prius
    Model:
    One
    i was installing an aftermarket nav system on
    prius 08, bcuz 2 hours working with dome lights on I have to jumpstart, now battery doesnt show bars is blank no mpg status, a message appeared check a/c connections. any suggestions?

    i check connections and NOTHING avg mpg got stuck... enter to service menu shows 13.6 volts while running and the car is running fine! just the bars doesnt appear not even mpg avg
     
    #1 fileaudio, Jan 28, 2015
    Last edited: Jan 28, 2015
  2. bisco

    bisco cookie crumbler

    Joined:
    May 11, 2005
    111,177
    50,607
    0
    Location:
    boston
    Vehicle:
    2012 Prius Plug-in
    Model:
    Plug-in Base
    i think you need to replace your 12v battery.
     
    #2 bisco, Jan 28, 2015
  3. Mendel Leisk

    Mendel Leisk Senior Member

    Joined:
    Oct 17, 2010
    57,967
    39,994
    80
    Location:
    Greater Vancouver, British Columbia, Canada
    Vehicle:
    2010 Prius
    Model:
    Touring
    Check your the voltage at the under hood jumpstart point, with a digital multimeter. Anything under 12.3 you've got problems. I think you know already though, lol.

    Jumpstart will not recharge it. You could try a charging session, or two, with a smart charger. May or may not work. May take a new battery.

    I'll try not to preach, but it's best to turn off all "convenience" lights possible: cabin ceiling, hatch. Also, minimize open doors. If possible, hooking up a smart charger when you're working on something like this would be good.
     
    #3 Mendel Leisk, Jan 28, 2015
    fileaudio likes this.
  4. Easy Rider 2

    Easy Rider 2 Senior Member

    Joined:
    Aug 5, 2014
    1,584
    258
    0
    Location:
    Ocala, FL
    Vehicle:
    2013 Prius c
    Model:
    Three
    And if the battery takes and holds a charge, it might be necessary to completely disconnect it for 5 minutes or so to get all of the electronics to reset.
     
    #4 Easy Rider 2, Jan 28, 2015
    fileaudio likes this.
  5. fileaudio

    fileaudio Member

    Joined:
    May 23, 2014
    109
    58
    8
    Location:
    El paso texas
    Vehicle:
    2016 Prius
    Model:
    One
    ok, my car is running as always battery holds chsrge well . the only thing Thatd strange is that energy monitor doesnt show battery bars or status...
     
    #5 fileaudio, Jan 28, 2015
  6. valde3

    valde3 Senior Member

    Joined:
    Jun 28, 2014
    2,002
    746
    0
    Location:
    Finland
    Vehicle:
    2004 Prius
    Measure the voltage of the 12V battery to make sure it’s ok. You can measure it from jump start point under hood.

    If it’s ok then disconnect the 12V battery for 5min. If that fixes MFD then it just got confused from 12V getting down. If it still doesn’t work it’s problem with your MFD. Maybe something happened when you did the change stereo. MFD problems are pretty common and they are related to vibration so changing stereo may have finally broken it…
     
    #6 valde3, Jan 28, 2015
  7. jdenenberg

    jdenenberg EE Professor

    Joined:
    Nov 21, 2005
    3,898
    1,900
    1
    Location:
    Trumbull, CT
    Vehicle:
    2020 Prius
    Model:
    LE AWD-e
    Early Gen2 Prii (2004 and 2005) commonly have MFD problems. See:

    Prius MFD

    For the most prominent one (a cracked solder joint) which is what your MFD symptoms seem to indicate.

    JeffD
     
    #7 jdenenberg, Jan 28, 2015
  8. GregP507

    GregP507 Senior Member

    Joined:
    Apr 5, 2014
    3,002
    481
    0
    Vehicle:
    2012 Prius Plug-in
    Model:
    Plug-in Base
    Check for burned spots on the printed circuit boards. Some components may need replacing or re-soldering. Failing that, a good electronic engineer could troubleshoot it and probably fix it, but those guys don't come cheap.
     
    #8 GregP507, Jan 28, 2015
  9. jdenenberg

    jdenenberg EE Professor

    Joined:
    Nov 21, 2005
    3,898
    1,900
    1
    Location:
    Trumbull, CT
    Vehicle:
    2020 Prius
    Model:
    LE AWD-e
    #9 jdenenberg, Jan 28, 2015
  10. fileaudio

    fileaudio Member

    Joined:
    May 23, 2014
    109
    58
    8
    Location:
    El paso texas
    Vehicle:
    2016 Prius
    Model:
    One
    #10 fileaudio, Jan 30, 2015
    Mendel Leisk likes this.
  11. Mendel Leisk

    Mendel Leisk Senior Member

    Joined:
    Oct 17, 2010
    57,967
    39,994
    80
    Location:
    Greater Vancouver, British Columbia, Canada
    Vehicle:
    2010 Prius
    Model:
    Touring
    Don't know much about it but hope that does the trick. ;)
     
    #11 Mendel Leisk, Jan 30, 2015
(You must log in or sign up to post here.)