1. Attachments are working again! Check out this thread for more details and to report any other bugs.

Lights of death "check hybrid system" could it be the 12v?

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by 86lLuSElJjtH, Sep 21, 2019.

  1. 86lLuSElJjtH

    86lLuSElJjtH New Member

    Joined:
    Jul 15, 2019
    4
    1
    0
    Location:
    Kentucky
    Vehicle:
    2010 Prius
    Model:
    IV
    Hey guys. Went out to start my 2010 this morning and it wouldn't start up at all. The dash lit up with all the lights and I got the "check hybrid system" warning. The display lit up but the engine didn't start.

    I went into the maintenance mode and checked my 12v voltage and it said it was 11.4v, when I turned on the accessory mode it dropped to 11.1v and stayed there.

    To my knowledge that is low, but is it low enough to cause my problems? I had no prior symptoms at all. MPG was about 46 give or take. Should I prepare for the worst, that its the hybrid battery?

    Any advice would be greatly appreciated.
     
    #1 86lLuSElJjtH, Sep 21, 2019
  2. bisco

    bisco cookie crumbler

    Joined:
    May 11, 2005
    107,762
    48,973
    0
    Location:
    boston
    Vehicle:
    2012 Prius Plug-in
    Model:
    Plug-in Base
    really not much you can do but proceed with a 12v load test, or just replace it if it's over 5 years old.

    if the lights come on after that, you'll need tech stream for the codes.

    how many miles on her?
     
    #2 bisco, Sep 21, 2019
  3. 86lLuSElJjtH

    86lLuSElJjtH New Member

    Joined:
    Jul 15, 2019
    4
    1
    0
    Location:
    Kentucky
    Vehicle:
    2010 Prius
    Model:
    IV
    138,000 miles. I ordered a new battery. I'm hoping it solves my problems
     
    #3 86lLuSElJjtH, Sep 21, 2019
    bisco likes this.
  4. tankyuong

    tankyuong Senior Member

    Joined:
    Nov 9, 2012
    1,555
    660
    0
    Location:
    Central MO
    Vehicle:
    2012 Prius c
    Model:
    II
    Dead battery
     
    #4 tankyuong, Sep 21, 2019
  5. 86lLuSElJjtH

    86lLuSElJjtH New Member

    Joined:
    Jul 15, 2019
    4
    1
    0
    Location:
    Kentucky
    Vehicle:
    2010 Prius
    Model:
    IV
    Hybrid or 12v in your opinion?
     
    #5 86lLuSElJjtH, Sep 21, 2019
  6. tankyuong

    tankyuong Senior Member

    Joined:
    Nov 9, 2012
    1,555
    660
    0
    Location:
    Central MO
    Vehicle:
    2012 Prius c
    Model:
    II
    12
     
    #6 tankyuong, Sep 21, 2019
  7. bisco

    bisco cookie crumbler

    Joined:
    May 11, 2005
    107,762
    48,973
    0
    Location:
    boston
    Vehicle:
    2012 Prius Plug-in
    Model:
    Plug-in Base
    have you cleaned the egr circuit?

    all the best!(y)
     
    #7 bisco, Sep 21, 2019
(You must log in or sign up to post here.)