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Regen and Slippery Surfaces

Discussion in 'Gen 4 Prius Main Forum' started by Cricky, Jan 29, 2022.

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  1. Cricky

    Cricky New Member

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    2020 Prius
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    LE AWD-e
    So I'm the guy who totaled beautiful Red 2020 Prius eAWD going straight. I was thinking that my rear motor randomly came on but after talking with my brother I think I know what happened. My brother recently bought a Tesla, Model Y. He sad that the Tesla often skids in the snow when he lets up on the accelerator - if the car is NOT in "Snow" mode. He said that in a Tesla you are effectively braking when you let up on the accelerator.

    I think, what happened is that I was getting close to a group of cars and I wanted to fall back a little. I let up a little bit on the gas pedal. That sent me into a gentle skid and I instinctively released all pressure to the gas pedal. This threw the car - which I've observed in the past - a more severe regenerative mode, braking the front wheels and throwing the car into a uncontrollably skid.

    Question: does anyone know if the rear wheels do regenerative braking on a eAWD model?

    Cricky
     
    #1 Cricky, Jan 29, 2022
  2. bisco

    bisco cookie crumbler

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    yes, the prius also effectively brakes when lreleasing the go pedal.

    no offense, but i think you need to drive with more caution on bad surfaces.
     
    #2 bisco, Jan 29, 2022
    Pulse07 and Cricky like this.
  3. ChapmanF

    ChapmanF Senior Member

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    The Prius does some regeneration when you let off the pedal, but not really like a Tesla, as I understand it. I haven't driven a Tesla, but from what I've read here, the Tesla has "one pedal" driving, where the go pedal completely controls regen braking and letting off the pedal gives you a lot of it, and the brake pedal only controls the friction brakes.

    In the Prius, both regenerative and friction braking are controlled by the brake pedal, and there is a small amount of regen braking programmed in when you release the go pedal, but only enough to match the slight drag you would feel in a car with a familiar automatic transmission in the same circumstances.

    So the road conditions where you'd have to worry when backing off the go pedal in a Prius should be just about the same conditions where you'd have to worry about it in a conventional car.
     
    #3 ChapmanF, Jan 29, 2022
  4. Cricky

    Cricky New Member

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    LE AWD-e
    Earlier that day, I remember taking a risk and driving through a less-shoveled lane but I didn't bake-off the accelerator and and did not experience any sliding.

    Cricky.
     
    #4 Cricky, Jan 29, 2022
  5. Leadfoot J. McCoalroller

    Leadfoot J. McCoalroller Senior Member

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    Lots of cars can lose traction just by closing the throttle, doesn't have to involve hybrids or regen braking at all.

    On an icy-enough road I could reliably put either of my AWD Outbacks into an understeer slide just by lifting the throttle too quickly.

    AWD is nice, but it isn't magic.
     
    #5 Leadfoot J. McCoalroller, Jan 29, 2022
  6. Mendel Leisk

    Mendel Leisk Senior Member

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    Snow tires'll help.
     
    #6 Mendel Leisk, Jan 29, 2022
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