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Couple of Questions

Discussion in 'Gen 1 Prius Plug-in 2012-2015' started by Frank Perkins, Nov 14, 2012.

  1. Frank Perkins

    Frank Perkins Member

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    1) Is there a corrlelation between radio function and pages? For example, I press AM and it seems to randomly go to one of my 6 pages or presets. It seems very random. Ideally hiting sAT would got to my page of SAT presets.

    2) Does anyone do the glide technique in EV mode? I saw radiomans YouTube video but was wondering if there was something similar for EV only mode.

    3) when EV runs out the battery the icon is replaced by a battery icon with hybrid/EV capacity and removes the range in miles. So even though the "main" batteries are empty, the hybrid battery is still available. Kinda confusing but I get it. Questions: are they actually seperate batteries or is it when the bank runs low the minimal charge left is for hybrid mode only? Also, is it ever possible for the ICE to charge the car enough to get back into EV mode or is that only possible via a plugin charge?
     
  2. bielinsk

    bielinsk Gremlin

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    I will try to answer.

    1) No, no correlation. The radio has no way to know where you programmed what.

    2) Gliding in EV is difficult because when you remove from the gas, it enters a regen which slows you down. You can put the car in N or you can lightly apply gas to prevent the regen. From my 7000 miles, I say just drive it.

    3) There is one battery, but it is divided. I will use pretend numbers, but it is something like this. The traction battery (used for HV mode) is the first 65% or the battery. Any charge above 65%, is the EV battery and that will give you about 11 miles of EV. When you have EV > 1 mil, the display will show the EV portion of the battery. When you get to less than 1 mile of EV mode left, the battery display will change and show you the HV portion of the battery that is remaining.

    I have been in HV mode (because the battery was > 65%) and going downhill. The downhill charged the battery above 65% and I was then able to enter back into EV mode for 2 or so miles due to the recharge of going downhill.

    Hope this answers your questions.
     
  3. bisco

    bisco cookie crumbler

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    1) the only thing i have figured out on the presets is you have to use the > < arrows to scroll to the page you want.

    2) i glide as bielinsk said by applying light pressure to the pedal and using the hsi to keep the bar on the line between power and regen, or just to the right as close as possible.
     
  4. Frank Perkins

    Frank Perkins Member

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    I still can't figure out what the best way to setup my presets are. If I press AM, it somehow finds an AM station, but then it shows me some other page of presets. I wish AM = Page 1, FM = Page 2, etc

    A question on brakes. My understanding is that if I gently press the brakes I slow down with the motor using the regen braking. Does this mean that if I dont slam the brakes, most of my stopping is not using the actual pads? Does this mean brake pads on the Prius should last longer?
     
  5. bielinsk

    bielinsk Gremlin

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    Yes, brake pads should last about 100,000 to 150,000 miles on the prius.
     
  6. F8L

    F8L Protecting Habitat & AG Lands

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    On my GenII the brake pads still had nearly 50% left at 150,000 miles. I estimate I could go another 100k or so. If you're not a hard braker then they last a very long time. :)
     
  7. Germwise

    Germwise Junior Member

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    About point 3.

    so if I charge a PIP over night, the HV battery is full the next day if you choose to save EV mode for later?

    The reason I ask is I went on a test drive and I was told the prius had 2 batteries, the NIMH and the Li Ion and that the charge of one does not affect the other.

    Then again, salesmen have NFC. I called and scheduled a PIP test drive and asked for them to charge it. When I arrived they couldn't even find them in the parking lot- no charge.
     
  8. devprius

    devprius /dev/geek

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    You are correct that there is one big battery that is logically divided up into EV mode and HV mode. However, your numbers are off, or flipped around. Approximately 62% of the battery can be used for EV mode, and about 6% to 8% is usable for HV mode. The rest of the traction battery's capacity can't be accessed. The most I've seen my battery get charged to was 85%, and the most I've discharged it to has been 18% (2 battery bars showing). Generally, 23.1% SOC to 85% SOC is the EV portion, and 17% to 23.1% SOC is HV mode, but there is some overlap from 23.1% and 27.9%, where you can be in either state, depending upon if you are discharging or charging the battery. When the car switches from EV mode to HV mode, I'm at 23.1% with 6 battery bars showing. I won't get the solid battery back until I hit 27.9% and the system lets me choose EV again.
     
  9. devprius

    devprius /dev/geek

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    I finally had to do the brakes on my 2005 at 140K miles. The dealership had been telling me for the last 40K miles I needed new brakes really soon. I ignored them...
     
  10. SJ PiP

    SJ PiP Member

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    one battery per pg 614 of manual:
    Type Lithium-ion battery
    Voltage 3.7 V/cell
    Capacity 21.5 Ah
    Quantity 56 cells
    Overall voltage 207 V

    salesman having NFC when it comes to PiP seems to be a common theme
     
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  11. devprius

    devprius /dev/geek

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    The preset screens are independent of whether you are tuned to AM, FM, or SAT. If you wanted to, you could have 2 FM stations, 3 SAT channels and 1 AM station all on the first preset screen. I setup the first 2 preset screens to my favorite FM stations, the 3rd preset screen is AM stations, and the last 3 preset screens are all SAT channels. It's very flexible. Which of course means that it can be quite confusing.

    The brake pads should last between 100K miles and 150K miles easily. I got 140K miles out of the brake pads in my 2005 Prius, despite having a lot of hills that I had to go down every day, and had to kinda ride the brake. You don't need to replace brakes until they get to 1 or 2 mm. Anything earlier than that and you are just wasting money. Each mm of brake surface should last you at least 10K miles, if not more.
     
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  12. CharlesH

    CharlesH CA HOV Decal #5 on former PiP

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    The confusion with the PiP battery stems in part from the historical tidbit that the pre-production version of the PiP DID have separate HV and EV batteries. A major gripe was that when the EV battery was depleted, that it could only be recharged by the plug; that is, it could not accept regeneration energy. So with the production model, they went with one physical LiIon battery that is managed by the software to provide the appearance of separate HV and EV batteries. As mentioned, the software has the flexibility to move the line between the HV and EV "batteries", or even treat the entire battery as the "HV" battery (i.e., when you press HV mode when there is still lots of charge in the battery).
     
  13. terpsmandan

    terpsmandan Member

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    I just set all 36 presets to XM. Also you can glide on EV only. Works just like gliding a regular Prius.
     
  14. Germwise

    Germwise Junior Member

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    I thought the whole point of gliding was that the gas engine would turn off not using gas. How much electricity are you using keeping a steady speed using cruise control in EV mode?
     
  15. bisco

    bisco cookie crumbler

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    depends on the speed, terrain, wind, temp etc. pulse and glide are generally to get the most efficient use out of the ice.but gliding, instead of regen and less battery use may be more efficient although i haven't read anything on it yet. the motor should have an efficency curve (rpms), but i don't think anyone's found it.
     
  16. Adam Leibovitch

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    1) Mine goes to the last preset of that type I was on, or the first preset of that type on the list if not recently in that source.

    2) yes. I get up to cruising speeds and then try to glide and get as much free ride as possible. You glide much better if you put a little extra air in the tires. If you have never checked yours, theyre probably a little low.

    3) I think you have to regen enough to get up to at least 1.2 miles or something and then it will allow you to get back in EV mode. It is one battery, HV mode is when the battery is in the ~18~23% state of charge range

    I am also in the PiP salesman NFC club. I was cross shopping the Leaf and he spent 20 minutes trying to explain to me that the Leaf uses the same Gas hybrid electric engine that the Gen 2 prius has and Leaf is old technology; Gen3 prius is the new tech.
     
  17. devprius

    devprius /dev/geek

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    You can manually switch back to EV mode when the SOC (state of charge) gets up to 27.9%. This is usually around 0.6 to 0.8 miles for me. The car will automagically switch to EV mode if you have gotten the SOC up to 32.9%, or about 1.4 to 1.6 miles for me. I see this happen every day for me since I have to come down a steep hill when going home. With the old Prius, I'd get half way down the hill, the battery would be full, and I'd have to use the friction brakes the rest of the way. With the PiP, I have so much more battery to recharge that I'm pretty much not touching the friction brakes at all.
     
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