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Lock-In Drive Mode

Discussion in 'Gen 5 Prius Main Forum' started by mannymendez25, Jun 10, 2023.

  1. mannymendez25

    mannymendez25 Junior Member

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    I've noticed when the drive mode is set to Eco, every time I turn on the car, it stays on Eco and the Eco light illuminates under the speedometer. However, if I switch to sport mode and turn off the car, when I turn the car back on, there is no mode illuminated under the speedometer so I assume it reverts to normal mode? Is there a way to keep it locked into sport mode?
     
  2. Hammersmith

    Hammersmith Senior Member

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    Nope. That's a deliberate choice by Toyota and several other car companies.

    You could try configuring Custom mode to actually be Sport mode in disguise and see if that gets around the issue.
     
  3. djasonw

    djasonw Active Member

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    Lol. My 22 Tucson Hybrid does the same thing. Obviously, my 2013 Prius v ditto. Wish it stayed on your desired mode.


    iPhone ?
     
  4. fuzzy1

    fuzzy1 Senior Member

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    When this came up after the Gen3 release, in 2009, we were told that choice was related to the EPA ratings rules. If the PWR (then) or Sport (now?) mode was sticky, the car needed to be EPA tested in that mode, possibly getting a lower MPG score.
     
    #4 fuzzy1, Jun 11, 2023
    Last edited: Jun 12, 2023
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  5. SupersonicPrius

    SupersonicPrius Junior Member

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    As alluded to above, it’s for EPA reasons. Vehicles are certified for their “normal” drive modes, so that is what the software defaults to in order to preserve EPA ratings - generally speaking of course.
     
  6. mannymendez25

    mannymendez25 Junior Member

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    Ah, ok that makes sense. I configured Custom Mode to be Sport but it resets back to Normal mode once I power on the car again. Before anyone asks why would I buy a Prius and want to be in Sport mode getting worse MPG, my previous car was a manual 2020 Mustang GT with 460HP. From time-to-time I want to feel all 194HP the Prius has to offer!!
     
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  7. sam spade 2

    sam spade 2 Senior Member

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    Sure. But your posts.......all of them in this thread......seems to indicate that you want that ALL of the time. :)

    And mostly the same effect can be had by just STOMPING on the gas pedal.
     
  8. Trollbait

    Trollbait It's a D&D thing

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    I remember that.

    But...EPA testers have to keep the cars to proscribed acceleration rates. That negates the change in throttle response a sport mode has. That could be other changes in operation that lead to more fuel use. I guess holding rpms higher could be reason enough to avoid it. Now, if normal and eco are both sticky, how is it determined which to use for the test?
     
  9. fuzzy1

    fuzzy1 Senior Member

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    Whichever gets the lower score.
     
  10. Andy2

    Andy2 Member

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    Hmmm. My 2022 Prime DOES retain the driving mode used on the previous day’s drive. Just confirmed this today. Left it on Powermode yesterday and still on this mode today.
     
  11. mannymendez25

    mannymendez25 Junior Member

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    I don't want to stomp on the pedal all the time, I just want to feel the peppiness when in Sport Mode. There is a difference when leaving a red light in Sport Mode vs. Eco Mode. I would like to keep it in Sport Mode for a whole day when I'm in the mood for driving like a "Speed Demon" LOL.
     
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  12. sam spade 2

    sam spade 2 Senior Member

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    Then just PUSH THE DAMN BUTTON.
    :whistle:
     
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  13. bisco

    bisco cookie crumbler

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  14. Andy2

    Andy2 Member

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    Okay, so in my 2022 owner’s manual, it states, “the driving mode will not be changed automatically until the switch is pressed, even if the power switch is turned off”. This has been my experience (see above). But, it also states that if ac is on, the car automatically switches to eco mode (p. 426).
     
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  15. Andy2

    Andy2 Member

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    As per my comment above, can anyone confirm that the 2023 operates similarly re: selected mode remaining even after power is shut down?
     
  16. Hammersmith

    Hammersmith Senior Member

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    Normal and Eco are sticky, Sport and Custom are not.

    Eco -> Eco
    Normal -> Normal
    Sport -> Normal
    Custom -> Normal
     
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  17. mountaineer

    mountaineer Active Member

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    The manual on page 632 says there are two "steering wheel control" modes: normal and sport. Can anyone clarify the differences? Does sport steering wheel control turn the wheels more for a given amount of turn on the steering wheel? (Why wouldn't I want that all the time. Where's my yoke.)
     
  18. Hammersmith

    Hammersmith Senior Member

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    I'll do some experiments later, but I think it has to do with the force it takes to move the steering wheel at different speeds. I've noticed that the steering wheel is much lighter(easier to move) at low speeds compared to higher speeds. It makes parking or maneuvering in parking lots much easier. I wonder if Sport mode tightens things up to give the illusion of more road feedback? I suspect it doesn't alter the rate of turn, just the force needed to turn.
     
  19. Hammersmith

    Hammersmith Senior Member

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    Confirmed at least one part. At slower speeds(say 20ish mph and below), the steering effort on Eco is noticeably less than on Sport. Don't know about highway speeds yet as I was just running local errands.
     
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