Switched off 07 Prius during initial ICE cycling

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by ystasino, Jun 11, 2007.

  1. ystasino

    ystasino Active Member

    Joined:
    Apr 17, 2007
    793
    50
    0
    Location:
    Tucson, Arizona
    Vehicle:
    2007 Prius
    Model:
    Two
    I accidentally powered off the Prius while the ICE was cycling. My senses of reason and routine are weak in the morning.

    I didn't see any ill effects after restarting it but I'm wondering what would canceling that initial cycle repeatedly do to the Prius except to improve mpg.

    Thanks
     
    #1 ystasino, Jun 11, 2007
  2. TonyPSchaefer

    TonyPSchaefer Your Friendly Moderator
    Staff Member

    Joined:
    May 11, 2004
    14,816
    2,499
    66
    Location:
    Far-North Chicagoland
    Vehicle:
    2017 Prius Prime
    Model:
    Prime Advanced
    I've shut down at what seemed inopportune times. I question it at the time but them just move on.
    I would not foresee any problems but would also avoid doing it regularly.
     
    #2 TonyPSchaefer, Jun 11, 2007
  3. qbee42

    qbee42 My other car is a boat

    Joined:
    Mar 2, 2006
    18,058
    3,076
    7
    Location:
    Northern Michigan
    Vehicle:
    2006 Prius
    It would be a poorly engineered vehicle that lets you shut down when it would cause harm. The Prius is anything but poorly engineered. You would have to start yanking wires or fuses to cause any shutdown problems.

    Tom
     
    #3 qbee42, Jun 11, 2007
  4. dogfriend

    dogfriend Human - Animal Hybrid

    Joined:
    Feb 26, 2007
    7,512
    1,188
    0
    Location:
    Carmichael, CA
    Vehicle:
    2007 Prius
    It seems to me that the Prius is more immune to this sort of "abuse" than a normal (non-hybrid) vehicle. After all, the thing is designed to start and stop the ICE at the command of the Hybrid ECU, not based on driver input. The oil pump is already pumping oil to the bearings before the Engine ECU adds fuel and spark. The reason the ICE stays on longer initially is to get the Catalytic Converter up to temperature so that it is effective at lowering emissions.
     
    #4 dogfriend, Sep 6, 2007
  5. Jimbo913

    Jimbo913 Junior Member

    Joined:
    Feb 25, 2016
    25
    7
    0
    Location:
    Maryland
    Vehicle:
    2006 Prius
    Model:
    Three
    A bit unrelated question but has anyone figured out how to command the ICE to kick on and stay on? I would prefer to command it on in bumper to bumper traffic when the battery gets low to avoid constant engine cycling. I wish I could intervene in order to charge to at least two bars above middle instances like this.
     
    #5 Jimbo913, May 26, 2016
  6. bisco

    bisco cookie crumbler

    Joined:
    May 11, 2005
    111,169
    50,602
    0
    Location:
    boston
    Vehicle:
    2012 Prius Plug-in
    Model:
    Plug-in Base
    no, you can't control it. there is a hidden maintenance screen that allows you to run the engine, but it wouldn't work while driving.
    prius have been cycling the engine to charge the battery for 20 years with no known ill effects.
     
    #6 bisco, May 26, 2016
  7. Starship_Enterprius

    Starship_Enterprius Active Member

    Joined:
    Aug 11, 2014
    322
    158
    0
    Location:
    Ottawa, Ontario
    Vehicle:
    2018 Prius Prime
    Model:
    Premium
    I'm not entirely sure it will work, but the 2 times I forgot to put it back to from B mode going downhill, it wouldn't shut off at a stoplight. Scared me to death thinking something was wrong with my Prius.

    Try putting it in B mode and let us know.
     
    #7 Starship_Enterprius, May 26, 2016
(You must log in or sign up to post here.)