Featured Conditions best for Eco, Normal and Power mode

Discussion in 'Prime Main Forum (2017-Current)' started by Bobdski, Mar 13, 2017.

  1. Bobdski

    Bobdski Junior Member

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    I am new to hybrids, I have my Prius Prime Premium for 3 weeks now. It seems to me there are advantages of using each mode in different conditions but I read some saying they are always in Eco. For instance I live in a hilly area,if I'm doing 30 mph up a hill, Eco mode is struggling unless I happen to be in EV. Even in Eco EV the coach is telling me to crawl up the hill. Can someone explain this?
     
  2. bisco

    bisco cookie crumbler

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    there are no conditions that call for one mode or another. it's just an electronic device that requires more pedal travel to achieve the same acceleration in eco as normal, and normal as power.
    eco does suppress heating and cooling though, to save some energy.

    the coach understands that since you chose eco, you want to save energy. you can go faster if you want to.
     
    #2 bisco, Mar 13, 2017
    Last edited: Mar 13, 2017
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  3. Prodigyplace

    Prodigyplace Senior Member

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    On Gen 4, and I assume Prime, the Eco setting for the climate control can be controlled independent of driving mode.
     
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  4. ForestBeekeeper

    ForestBeekeeper Active Member

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    99% of the time we keep our Prius' in ECO mode.

    However there are times when we shift to PWR mode.
    1-when there is an interstate on-ramp that is really short, giving you one 1 or 2 car lengths to get up to speed. The PWR gives you access to that 0-60 in 10.2 seconds.
    2-when there are levees of fresh snow/sleet that you need to cross, PWR allows you to aggressively push through them better.
    3-if you need to climb an embankment of ice. Disable the traction control system and shift to PWR may help to climb up the ice.
     
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  5. xtins

    xtins New Member

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    I'll love to know this answer too.

    Prius Prime 2017 - Advance
     
  6. Lee Jay

    Lee Jay Senior Member

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  7. bisco

    bisco cookie crumbler

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    7 years of power/normal/eco mode accessibility, and it is still just as confusing for many as 'b mode'.
     
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  8. priuscatprimeguy

    priuscatprimeguy Senior Member

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    to "b" or not to "b" THAT is the question
     
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  9. bisco

    bisco cookie crumbler

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    'not' is the answer, unless you going down a long hill and the battery is full.
     
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  10. Lee Jay

    Lee Jay Senior Member

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    B mode is better on a long hill even when the battery is not full, for several reasons. First, it makes sure you don't inadvertently use the friction brakes. Second, it keeps your brake lights off so that a person behind you can tell the difference when you actually need to apply the brakes because of a traffic slow down. It's safer.
     
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  11. 2011RedPrius

    2011RedPrius Junior Member

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    Curious about this. I realize this is a different model, but I have noticed on my Gen 3 that is takes a long time to heat up. I am running it in eco. Could that be the reason why?

    Thanks,
    rp
     
  12. Lee Jay

    Lee Jay Senior Member

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    Yes.

    Eco drive mode
    Suitable for driving that improves fuel economy by generating torque in response to accelerator pedal operations more smoothly than in normal mode.
    When Eco drive mode is selected, the “ECO MODE” indicator will illuminate on the main display.
    While the air conditioning is being used, the system automatically switches to air conditioning eco mode (→P. 490, 501), allowing for driving that leads to even better fuel economy.

    Air conditioning eco mode
    The air conditioning system is controlled with low fuel consumption prioritized such as reducing fan speed, etc.
     
  13. bisco

    bisco cookie crumbler

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    and when toyota says 'air conditioning', they mean hvac.
     
  14. 2011RedPrius

    2011RedPrius Junior Member

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    Not to theadjack, but would it better to take it off eco mode when I first get in it to heat it up and then switch to eco? It takes a while to heat up.

    Thanks again,
    rp
     
  15. bisco

    bisco cookie crumbler

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    certainly worth a try. keep in mind, it is limiting the water temp. so it's still going to take awhile to reach whatever temp eco limits, then go higher to the next limit. set the thermo on high.
     
  16. Bobdski

    Bobdski Junior Member

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    So if Eco, Nml and Pwr mode are about pedal travel I still think it best to be in Pwr mode when pulling out only a busy 2 way street or entering a highway ramp. I'm still guessing the mpg impact is worst from Eco than Pwr in that situation. Are far as EV, HV and EV auto go EV auto sounds like the best choice, let the car determine what is the best use of electric or gas motors.
     
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  17. bisco

    bisco cookie crumbler

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    well, there is no 'best choice'. just the most appropriate for you, and the driving situation.

    if you look at the pedal travel chart that lee posted above, it's easy to see that you'll get more power sooner, without having to 'floor' it.
     
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  18. Bobdski

    Bobdski Junior Member

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    I'd stay in EV mode all the time if I could, I love that electric motor. It's nice I can charge at work for free, I've been using gas only on weekends. I don't charge at home since I live in an apartment. Sounds like I still need to experiment.
     
    #18 Bobdski, Mar 14, 2017
    Last edited: Mar 14, 2017
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  19. Bobdski

    Bobdski Junior Member

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    I will add one thing, unless it was in the back seat I could hardly think of a worse place for the mode buttons, to the right of the shifter is not well designed. They would be great as paddles on the steering wheel.
     
  20. bisco

    bisco cookie crumbler

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    that's what it's all about!(y)
     
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