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Best temperature setting for summer to avoid constant ICE turning on?

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by h1ph0panonymous, Apr 14, 2024.

  1. h1ph0panonymous

    h1ph0panonymous Junior Member

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    I see, is pressing the fan OFF button the official way to disable the whole climate system? Because it still shows what vent preset I have when I press the fan OFF button.
     
  2. AzusaPrius

    AzusaPrius Senior Member

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    Yes the climate system in OFF means no power being used.

    ICE kicking on at two bars is normal.

    ICE kicking on before that while display shows more bars means the HV battery is going bad, while A/C is OFF like you say.

    Remember ICE will kick on less in ECO mode, if in normal or POWER mode ICE will kick ON sooner than in ECO.
     
  3. h1ph0panonymous

    h1ph0panonymous Junior Member

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    I mean yeah 10 year battery but I still get 55 mpg on a 22 mile trip mostly back roads, hills and slopes then a highway for 10 miles if I feather it and use EV mode in smart areas and don’t go too slow before engaging ICE with a harder pedal foot press.

    just got 61 mpg on a 7 mile trip from the gas station to work. Was speeding to be in a better gear for mileage.
     
  4. AzusaPrius

    AzusaPrius Senior Member

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  5. h1ph0panonymous

    h1ph0panonymous Junior Member

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    I only ECO mode unless someone wants to play who can break the speed law the most which is once or twice a month but I did do a PWR mode earlier in the day prior to the main instance talked about in the OP and yes it was in ECO. Maybe gotta press ECO mode thrice on/off/on to clear any previous mode data still in memory? Lol
     
  6. h1ph0panonymous

    h1ph0panonymous Junior Member

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    Yeah I want a lithium pack once my pack shows true signs of degradation, so far I drive literally 7 days a week 40 miles so the battery is keeping active and conditioned but I live in a winter freeze state so lithium is no go for me.
     
  7. rjparker

    rjparker Tu Humilde Sirviente

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    This guy thinks his gen3 is a Tesla. Using ev like he does is hastening the demise of his battery.
     
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  8. h1ph0panonymous

    h1ph0panonymous Junior Member

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    Through a parking lot at a dealership and when I’m going downhill at 999 rpm above 41 miles per hour?
     
  9. PriusCamper

    PriusCamper Senior Member

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    That's normal for an OEM battery that's ancient 1980's style too heavy chemistry that only still exists in cars because Toyota patents and contracts makes it profitable for them an no other auto-maker/monopoly.

    Or even more accurate, a project lithium pack will run your AC at max power on even the hottest of hot days based on max available amps because its not an outdated advancement.

    But most accurate of all is that EV mode is a gimmick in a hybrid and it wastes more gas to recharge your battery than in it saves in using it without burning gas. If you want a real EV mode, then buy a real EV.
     
  10. h1ph0panonymous

    h1ph0panonymous Junior Member

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    Are you saying it’s incapable of hyper-miling and prolonging the life of the ICE?

    I drive at night so no ones really around, I’m going to EV when possible obviously not to the point of 2 bars unless I’m chilling at a parking lot with my dog inside. I feel like the amount of driving I do 7 days a week keeps the battery conditioned in a state of “borderline good” as long as I keep it active daily and condition it, get it down to two bars and have it charge it every trip at least once. I still get 55 mpg if I feather and work EV smart and hit speeds for best high gear and low rpm even if that means going over the speed limit.
     
  11. rjparker

    rjparker Tu Humilde Sirviente

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    If the car has 50k miles AND the oil has been changed at 5k intervals, the engine is not your concern. The $2500 hv battery will be a big expense that will need replacement in the near future. A battery has so many discharges in its lifespan. Toyota's algorithm keeps the battery significantly charged most of the time, especially when the capacity is still good. What you are doing is hastening that expense by have fun trying to use ev as much as possible.

    With these cars you have $2500 brake boosters likely to fail along with head gasket failures at higher miles. HV battery failure is expected, Toyota now warrants them for ten years max for a reason, they begin to fail after ten years or 150k miles. It reality it does not matter to us what you do to your battery.
     
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  12. h1ph0panonymous

    h1ph0panonymous Junior Member

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    Yes I went into the purchase assuming the battery didn’t get daily active use with how low the miles were on the car at the date of purchase 39k miles in 2023 but companies like green bean exist so payment plans are an option with them for a 1-2k battery replacement. Brake boosters from forcing brake regens more manually than naturally (downhill regen)? Idk if it’s a residential road or parking lot at night, I’m not going to throttle over the ICE line in the hud bar, what’s wrong with slow acceleration when no ones looking, isn’t that what Prius‘ are known for, at least as far as Prius driver are stereotyped as?
     
  13. PriusCamper

    PriusCamper Senior Member

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    Just apply your passion for hypermiling into learning everything you can about how to restore your existing batteries capacity and soon as you can afford it upgrade to: NexPower Energy

    The main thing I think you're not clear on is that draining your battery down to 2 bars in EV mode causes the car to use more gas to charge it up than if you let the computer decide when to use EV mode and just focus on pulse & glide instead.
     
  14. Leadfoot J. McCoalroller

    Leadfoot J. McCoalroller Senior Member

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    Hybrid batteries lose value with age. That's both in terms of transportation utility and monetary value.

    Just because the last owner didn't use it much doesn't mean there was more left for you. It means they missed out on it when they had a chance.

    Now it's your turn- get all the miles you can while it is young and healthy and happy!
     
  15. PriusCamper

    PriusCamper Senior Member

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    I always wonder about this... If charge & balance and reconditioning can mitigate enough of its aging, maybe that means a llittle used pack has more charge cycles remaining than a pack that was used in a daily driver?

    I currently have a Gen3 OEM pack that tests healthy and has been well cared for with no bad modules, but not in a vehicle other than briefly in past 4 years once my friend got a Project Lithium prototype for testing. Just charged and balanced it again and am going to get it back on the road to find out. Both the former owner and I are at 42 months on our Project Lithium packs.
     
  16. h1ph0panonymous

    h1ph0panonymous Junior Member

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    My trip home is 70 percent down hill so it all evens out when I get 90-100 percent battery charge from that hill then it releases its extra 2 bars of juice on the 65 mile per our highway I go on so I’m getting like 127 mpg per gallon while it’s off loading it’s extra juice when the cars rolling speeds are higher than 61 miles per hour. Not every night I’m able to drain it to two bars on purpose only the night I stop at the grocery store, yes I take my dog to work, so leave the car on in case a cop sees her and says why the **** the car is off with a dog and windows closed, yes doors are manually locked with physical key from the fob.

    Isn’t that a proper battery conditioning though? But I’m lucky to have that 70 percent downhill backroad advantage before hitting up the highway.
     
  17. h1ph0panonymous

    h1ph0panonymous Junior Member

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    I see my total miles I HAVE to drive it 7 days a week as actually a boost in its health compared to its non-active state before purchasing it, as each trip depending on errands after work and having to leave my car on with my dog in it (yes I take her to work with me everyday) while at the grocery store sometimes draining the battery to two bars before I go back home on 45 mile per hour backroads with 70 percent downhill advantage to regen it to 100 percent charge from one particular hill before going on the highway where the Prius will start to off load that extra two bar of juice in rolling speeds of above 61 miles per hour giving me 127 mpg for 3-4 miles of the highway then it’s 55 mpg after the extra two bars of juice have off loaded.

    Is that not how you condition them? Luckily I have the back home trip advantage of lower speed limit back roads and hills.
     
    #37 h1ph0panonymous, Apr 15, 2024
    Last edited: Apr 15, 2024
  18. Leadfoot J. McCoalroller

    Leadfoot J. McCoalroller Senior Member

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    I'm a firm believer that a daily trip of 10 miles or longer is the nicest thing you can do for a Prius. I'd call that battery conditioning.

    I let my Prius manage all the little details beyond that.
     
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  19. h1ph0panonymous

    h1ph0panonymous Junior Member

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    I swear I read that is what the consensus is based on a reddit search prior to purchasing it where the majority of the commenters were saying their OEM batter was still good after the 10 year mark due to the fact that they drove it everyday, someone said close to 400k miles and still had the OEM battery lol
     
  20. Leadfoot J. McCoalroller

    Leadfoot J. McCoalroller Senior Member

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    Yes, I generally agree with that. For your model of the car, you should probably look for it to last closer to 15 years. (It seems to be a bit less for our version of the car, which uses a smaller pack.)

    As far as 400k miles go... sure, I've seen some of them. Just get those miles on the car before its 15th birthday or so, and you can make the same claim.
     
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