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

heat without ICE

Discussion in 'Gen 2 Prius Main Forum' started by obscenefrogtour, Oct 29, 2017.

  1. obscenefrogtour

    obscenefrogtour New Member

    Joined:
    Jul 23, 2017
    11
    1
    2
    Location:
    USA
    Vehicle:
    2008 Prius
    Model:
    Three Touring
    How do I tell my prius "input the cabin air from the direction of the ICE so I get the hottest possible air, but don't turn on the ICE when I'm stopped *just* to provide me with hot air?"

    When I stop at a stoplight, I want the ICE to turn off as normal..but I still want the air to come from the ICE--while it's off (so it's as-hot-as-possible-with-the-ICE-off air)

    I don't want the coldest possible air, but I don't want to be burning petrol for the sole purpose of generating hot air.
     
    #1 obscenefrogtour, Oct 29, 2017
  2. JimboPalmer

    JimboPalmer Tsar of all the Rushers

    Joined:
    Apr 14, 2009
    12,470
    6,862
    2
    Location:
    Greenwood MS USA
    Vehicle:
    2012 Prius v wagon
    Model:
    Three
    There are ceramic heaters in the defrost mode. They can add some heat separate from the engine. I know of no way to forbid the engine from starting.
     
    #2 JimboPalmer, Oct 29, 2017
  3. JimN

    JimN Let the games begin!

    Joined:
    Nov 26, 2006
    7,028
    1,116
    0
    Location:
    South Jersey
    Vehicle:
    2010 Prius
    Model:
    V
    Blocking your grill will help but when the ICE is too cold there isn't enough heat to share.
     
    #3 JimN, Oct 29, 2017
  4. valde3

    valde3 Senior Member

    Joined:
    Jun 28, 2014
    2,002
    745
    0
    Location:
    Finland
    Vehicle:
    2004 Prius
    If your battery is warm enough and has enough bars you can use EV-button. North American model doesn’t have one from the factory so first you need to install it.

    Second option (and the only one that will always work is to use neutral. So when you’re standing still and engine is not running switch gear to neutral. Then no matter how you use the heater engine won’t start. But remember to monitor the hybrid battery bars, if it gets down two 2 bars go back to drive/park.

    Don’t use the windscreen blow direction as Prius wants to run the engine lot more in that mode. I use the windscreen+feet mode with fan on the slowest speed and temperature at 16c (61F) for almost the whole winter.
     
    #4 valde3, Oct 29, 2017
    obscenefrogtour likes this.
  5. obscenefrogtour

    obscenefrogtour New Member

    Joined:
    Jul 23, 2017
    11
    1
    2
    Location:
    USA
    Vehicle:
    2008 Prius
    Model:
    Three Touring
    This is great info, but what do you mean by "Don’t use the windscreen blow direction as Prius wants to run the engine lot more in that mode."

    What is the windscreen blow direction?
     
    #5 obscenefrogtour, Oct 29, 2017
  6. valde3

    valde3 Senior Member

    Joined:
    Jun 28, 2014
    2,002
    745
    0
    Location:
    Finland
    Vehicle:
    2004 Prius
    It’s the mode when blower only blows to front windshield. You get to it by either pressing the button on steering wheel or from MFD touchscreen.

    On my Prius engine always runs on that mode unless engine temperature is more than 65c or 149F. On the windshield+feet mode engine can be a lot cooler and still not run. And in the winter you pretty much have to have some airflow to windscreen to keep it from fogging/freezing so those two are the only blow directions that you can really use in the winter.
     
    #6 valde3, Oct 29, 2017
  7. bisco

    bisco cookie crumbler

    Joined:
    May 11, 2005
    107,693
    48,945
    0
    Location:
    boston
    Vehicle:
    2012 Prius Plug-in
    Model:
    Plug-in Base
    jedi mind trick?:cool:
     
    #7 bisco, Oct 29, 2017
(You must log in or sign up to post here.)