Question from a Gen3 Prius owner

Discussion in 'Gen 4 Prius Main Forum' started by iskoos, Nov 17, 2018.

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  1. iskoos

    iskoos Active Member

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    Hey Guys,

    I am a proud owner of 2010 Prius III. I talked about this car so much that my roommate ended up getting a 2016 Prius two Eco.

    He showed me his car. Very nice!..
    I powered it on(after an overnight cold) and immediately realized that the engine didn't start after about 12-15 seconds which would always be the case for Gen3 Prius. And I absolutely hate that.

    I liked this a lot and talked about it over at the Gen3 forum but some members questioned this claiming that this wasn't reported before.

    So I wanted to ask the real Gen4 owners here.

    Do your Gen4 start the engine within about 15 seconds when powered on (with foot on brake)?
    All this when you do not drive the vehicle. You are just sitting in it and waiting.
    Also consider your HV battery is sufficiently charged.

    Thanks
     
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  2. krmcg

    krmcg Lowered Blizzard Pearl Beauty

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    That is correct. No startup penalty on the Gen 4 Prius. If the battery has sufficient charge and your climate control is set for a friendly number, the gasoline engine will not automatically start...
     
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  3. CIDPUSA

    CIDPUSA New Member

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    It only does that on cold days to heat up the engine
     
  4. kevinwhite

    kevinwhite Active Member

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    Also the engine temperature has to be above 20°C (68°F) or it will revert to Gen3 behavior.

    So for your first turn-on on of the day it will probably start immediately (like gen 3) but will not when you use it again later in the day as the engine will still be warm.

    kevin
     
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  5. bisco

    bisco cookie crumbler

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    okay, that just negates post #2, and answers o/ps question in the negative.(n)
     
  6. bisco

    bisco cookie crumbler

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    also, what good is just sitting in the vehicle, and not moving it?
     
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  7. kevinwhite

    kevinwhite Active Member

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    Sorry for the confusion - I didn't read the OP's question enough to notice that he said a cold engine. Maybe I'm wrong - I thought that was the behavior and seemed consistent with mine but I cannot find documentation to support that.

    I just tested it on mine and it started but it only has 4 bars on the hybrid battery.

    I'll have to check over the next couple of days now the weather is cold enough - much of the time in California it doesn't get below the 68° limit to show this behavior up.

    kevin
     
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  8. Since2002

    Since2002 Senior Lurker

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    To prepare yourself for the rush of exhilaration when you step on the accelerator.
     
  9. iskoos

    iskoos Active Member

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    This will hardly be a problem in the sunshine state. We were in 90s till a few days ago:eek:
    When I tried it on my roommate's Gen4 the other day, the engine had been sitting overnight.
     
  10. iskoos

    iskoos Active Member

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    You sometimes may change your mind, or you may just want to move your car in and out of your garage with the battery power only.
    Having the ICE automatically come on has no valid point to me. This should have been left to the driver.
     
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  11. The Professor

    The Professor Senior Member

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    As others have said... If there's no need to start the combustion engine then it won't start it because there's no need, and this is often the case in warmer weather or when the engine is still warm. It often does start after around the time you mentioned though, even just sitting there.

    You can also often prevent it starting for longer by pressing the EV Mode button. This will attempt to use electric only power for as long as possible.

    In both cases though, harder acceleration, low HV power, high electrical drain, the cabin temperature being significantly different from the climate control temperature, hard braking, high speed, and so on, will coerce the combustion engine to start up.

    I don't quite understand why you hate the combustion engine not starting immediately, especially when the whole point of a hybrid vehicle is to reduce the use of the combustion engine to a minimum, but if you really want it to start, just press the accelerator while still in P and it'll fire up. If you want it on all the time while driving then drive in B mode.

    One of the beauties of the Prius is you can sneak out of your property in "stealth mode" (electric).

    So why do you hate the combustion engine not starting up immediately? I much prefer the opposite.

    Anyway, EV Mode to (maybe) prevent ICE starting, P + Accelerator and B mode to prevent it stopping.
     
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  12. kithmo

    kithmo Couch Potato

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    My experience with the Gen 4 is, if the ambient air temperature is 14 deg C or above, the HV battery has 3 or more bars, the climate control is switched off and I last used the car less than a day ago then the engine doesn't come on until needed.
     
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  13. Starship16

    Starship16 Senior Member

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    It's been in the low 50's every morning in my area of LA County, California.

    Anything below 60 degrees, and the engine usually comes on almost immediately after pushing the start button.

    What's the big deal?

    I prefer it that way.

    I want the oil to be flowing, and everything getting warmed up before I'm cleared for takeoff... :LOL:
     
    #13 Starship16, Nov 18, 2018
    Last edited: Nov 18, 2018
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  14. kithmo

    kithmo Couch Potato

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    Oil will always be flowing before the ICE starts up, the electric motor spins the ICE up to 1000 rpm before throwing fuel and spark at it.
     
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  15. Starship16

    Starship16 Senior Member

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    Thanks, that's interesting. My engine comes on immediately.... within 1or 2 seconds after pushing the Start button. That happens after the car has been sitting all night.
     
  16. alanclarkeau

    alanclarkeau Senior Member

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    The key is to ensure Climate Control is OFF - I go from the POWER button to Climate Control OFF buttons as a natural action when starting - then to EV button. And it's as long as the Hybrid Battery has at least 3 or 4 bars (it's sometimes fired it up with 3 saying "low battery".

    BUT - it will make insignificant difference to your l/100km, unless you're just moving the car a short distance - like outside to wash it. It has to warm the ICE up sometime.

    But I like to creep out of my street silently as a protest against the Harley, the Ducatti and 3 neighbour's cars which have minimalistic exhausts.
     
  17. Starship16

    Starship16 Senior Member

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    Thanks Alan. I usually turn off all HVAC before I get home, and park for the evening. (Old habit.)

    So nothing in "on" the next morning, when I power up the Starship.

    If it's cooler, the ICE kicks in. Doesn't bother me. It's quiet. I leave right away.

    I just drive it. Like any other car. :) Try not to even think about the ICE, EV, MPG, etc. I'd go NUTS if I had to "analyze" this car every time I drove it! :LOL:

     
    #17 Starship16, Nov 18, 2018
    Last edited: Nov 18, 2018
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  18. bisco

    bisco cookie crumbler

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    this all sounds exactly like gen 3 to me
     
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  19. bisco

    bisco cookie crumbler

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    there's the rub. if you can move the car in and out of the garage, in and weather, with any battery level, without the engine coming on, that would be a programming change from the gen 3.

    as it is, you can find threads here where people move there gen 3 out of the garage without the engine coming on, but getting it back in is the challenge, unless it is warm out, the battery has more than 3 bars and the engine is not stone cold from disuse.
     
  20. iskoos

    iskoos Active Member

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    Wow you got me completely wrong there. What I hate (or lets say very much dislike) is when the ICE automatically come on when I do not want it.
    I went and reread my original post and it could be taken the wrong way I understand.
    When I was saying "I hate that" I was referring to the automatic start up feature of Gen3 within the 12-15 seconds window.
    Thanks your input anyways...
     
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