1. Attachments are working again! Check out this thread for more details and to report any other bugs.

EV HV Button !!

Discussion in 'Gen 1 Prius Plug-in 2012-2015' started by aadnanzia, Feb 24, 2019.

  1. aadnanzia

    aadnanzia Junior Member

    Joined:
    Feb 24, 2019
    16
    7
    0
    Location:
    Pakistan
    Vehicle:
    2012 Prius Plug-in
    Model:
    N/A
    Hello
    I just recently got myself a 2012 JDM PIP. It's got 100k kms and is in a pretty good shape. However, the EV HV Button doesn't seem to work. It doesn't switch on my pressing the button between the HV and EV and vice versa. The car decides upon itself in which mode it wants to be in. At first I thought the button is broke , but then I realized it lets me switch if I am moving at less then 5 kph speeds.
    But what I read in this forum and everywhere around is different what I am experiencing. Anyone who could put some light on this issue of mine.
    Thanks.

    Posted via the PriusChat mobile app.
     
  2. bisco

    bisco cookie crumbler

    Joined:
    May 11, 2005
    108,713
    49,402
    0
    Location:
    boston
    Vehicle:
    2012 Prius Plug-in
    Model:
    Plug-in Base
    Congrats!
    Have you plugged it in?
     
  3. hieronymous

    hieronymous Member

    Joined:
    Oct 14, 2012
    154
    92
    0
    Location:
    Auckland, New Zealand
    Vehicle:
    2013 Prius Plug-in
    Model:
    N/A
    If the dash doesn't show you how many EV miles range you have, then you have zero EV range because the car isn't charged, and the EV/HV button does nothing. Without a charge the car behaves like a standard Prius.
     
  4. aadnanzia

    aadnanzia Junior Member

    Joined:
    Feb 24, 2019
    16
    7
    0
    Location:
    Pakistan
    Vehicle:
    2012 Prius Plug-in
    Model:
    N/A
    Thanks.
    Yeah, I should have mentioned, I try this only when the EV range is available. After charging it up.
    The car does drive in EV mode but just not as per my will and wish, rather on the wishes of the car apparently.
    However it doesn't switch modes unless the speed is less than 5 kph.

    Posted via the PriusChat mobile app.
     
    HPrimeAdvanced likes this.
  5. aadnanzia

    aadnanzia Junior Member

    Joined:
    Feb 24, 2019
    16
    7
    0
    Location:
    Pakistan
    Vehicle:
    2012 Prius Plug-in
    Model:
    N/A
    Yes after charging. Having being shown that I am having like 10 or 16 kms as EV range still it doesn't switch.
    Btw Does it only switch while stationary or under 5 kph since in my case this is the situation.

    Posted via the PriusChat mobile app.
     
  6. QuantumFireball

    QuantumFireball Active Member

    Joined:
    Mar 22, 2016
    419
    268
    0
    Location:
    Ireland
    Vehicle:
    2012 Prius Plug-in
    You should be able to switch at any time once there is some EV range available. Depending on the situation, the ICE may not turn off though (e.g. heating on, driving over 85 km/h), but the "EV Mode" light should be illuminated.

    Does any message appear on the display when you try switching? I understand it may be in Japanese.
     
  7. Pluggo

    Pluggo Senior Member

    Joined:
    May 23, 2016
    608
    532
    0
    Location:
    Folsom, Pennsylvania
    Vehicle:
    2012 Prius Plug-in
    Model:
    Plug-in Advanced
    You must develop a light touch on the pedal. Find this view on your Multi-Information Display and avoid the PWR area if you want to stay in EV while you still have EV miles indicated. There are other times when the engine will start, such as operating the heat or defroster above LO, battery too cold or too hot, preventing over-charging while going downhill or braking too long on a full charge, and once every 125 miles (just for good measure).
    upload_2019-2-25_6-10-16.png
     
    HPrimeAdvanced likes this.
  8. aadnanzia

    aadnanzia Junior Member

    Joined:
    Feb 24, 2019
    16
    7
    0
    Location:
    Pakistan
    Vehicle:
    2012 Prius Plug-in
    Model:
    N/A
    I understand , the pic you posted is when the car is in EV mode. But the button allows the shifting from EV mode and HV mode (in which there's a centre line). My issue pertains to that button not shifting modes.

    Posted via the PriusChat mobile app.
     
  9. jerrymildred

    jerrymildred Senior Member

    Joined:
    Oct 28, 2016
    11,508
    14,109
    0
    Location:
    Tampa, FL
    Vehicle:
    2017 Prius
    Model:
    Two
    It sounds like you're describing the way it behaves when the cabin climate control is calling for heat. The engine is the only source of heat. Before you park it, make sure that the climate control is set to its lowest temperature, deselect "auto," and then turn it off. Then shut down the car. Next time you start the car you should be able to run it in EV mode as long as there is EV range available.

    Side note: someone mentioned that once the EV range is used up, it runs like a regular Prius. Not totally true, because in a regular Prius EV is available when there's no EV range on the display because there's NEVER any EV range on the display in a regular Prius. In a PiP, when the EV range is depleted, the EV button becomes just a "beep" button.
     
  10. hieronymous

    hieronymous Member

    Joined:
    Oct 14, 2012
    154
    92
    0
    Location:
    Auckland, New Zealand
    Vehicle:
    2013 Prius Plug-in
    Model:
    N/A
    If you have EV range available from wall charging, and you press the EV/HV button, an EV mode sign will light up on the dash. It will stay there until you switch back to HV with the button, or run out of EV range. The car will stay in EV mode only if you use a light foot on the accelerator, if you want more power the engine will turn on, then turn off as needed. You cannot control the car to stay in EV mode only regardless of how much power you want.
     
    HPrimeAdvanced and jerrymildred like this.
  11. aadnanzia

    aadnanzia Junior Member

    Joined:
    Feb 24, 2019
    16
    7
    0
    Location:
    Pakistan
    Vehicle:
    2012 Prius Plug-in
    Model:
    N/A
    That is not what is happening with my car.
    I understand that if I use too much pedal the engine will start. But my worry is that the EV HV Button doesn't respond. And it doesn't switch modes when I press it. It only responds below 5kph.
    Do the EV HV modes be changed while moving at around say 10 kph or above (with the EV HV Button only and not via pedal pressing).

    Posted via the PriusChat mobile app.
     
  12. hieronymous

    hieronymous Member

    Joined:
    Oct 14, 2012
    154
    92
    0
    Location:
    Auckland, New Zealand
    Vehicle:
    2013 Prius Plug-in
    Model:
    N/A
    The EV/HV mode switch works up to 99 kph. Please describe again what you think is happening when you have EV range and press this switch, and why you think it isn't working properly.
     
  13. QuantumFireball

    QuantumFireball Active Member

    Joined:
    Mar 22, 2016
    419
    268
    0
    Location:
    Ireland
    Vehicle:
    2012 Prius Plug-in
    EV mode can be engaged at any speed, in any condition as long as the battery state of charge is high enough. You can still change to EV mode over 100 km/h (sorry, my previous 85 km/h was for European models only), it just means the ICE won't stop running.
     
    HPrimeAdvanced likes this.
  14. aadnanzia

    aadnanzia Junior Member

    Joined:
    Feb 24, 2019
    16
    7
    0
    Location:
    Pakistan
    Vehicle:
    2012 Prius Plug-in
    Model:
    N/A
    Well that's a problem then. because my EV HV Button works only when the car speed is at or under 5 kph, even with 15 kms EV range showing on the screen with full battery sign (completely full battery sign).
    It simply doesn't respond below that speed. I have tried long press, double button press, button press with force. Every known kind of button presses. Lol.

    Posted via the PriusChat mobile app.
     
  15. aadnanzia

    aadnanzia Junior Member

    Joined:
    Feb 24, 2019
    16
    7
    0
    Location:
    Pakistan
    Vehicle:
    2012 Prius Plug-in
    Model:
    N/A
    Could it be that the JDM variant only supports shifting of EV HV modes under 5 kph.
    Is there anyone in the forum owning a JDM PiP who could share his experience.

    Posted via the PriusChat mobile app.
     
  16. QuantumFireball

    QuantumFireball Active Member

    Joined:
    Mar 22, 2016
    419
    268
    0
    Location:
    Ireland
    Vehicle:
    2012 Prius Plug-in
    I believe @hieronymous has a JDM car as well - maybe they can confirm?
    Do the "Eco" and "Pwr" mode buttons work at any speed?
     
  17. hieronymous

    hieronymous Member

    Joined:
    Oct 14, 2012
    154
    92
    0
    Location:
    Auckland, New Zealand
    Vehicle:
    2013 Prius Plug-in
    Model:
    N/A
    @QuantumFireball "Eco", "Pwr" and "HV/EV" work as expected, as in the manual, in my JDM PiP.
    @aadnanzia you wrote "my EV HV Button works only when the car speed is at or under 5 kph" - what do you mean by "works"? What do you see/hear happening? What do you expect to happen? What makes you think it isn't working properly?

    If I have enough EV charge, am in HV mode, and press the HV/EV button under 100kph, the ONLY thing that ALWAYS happens is that the EV Mode sign on the dash lights up, then turns off when I press the button again. The ICE might start/stop depending on load. The EV range will start to reduce as I keep driving.
     
  18. aadnanzia

    aadnanzia Junior Member

    Joined:
    Feb 24, 2019
    16
    7
    0
    Location:
    Pakistan
    Vehicle:
    2012 Prius Plug-in
    Model:
    N/A
    Yes the "ECO" and "PWR" buttons when pressed lit or unlit the respective icon on the screen and also do what's intended. Make the car a turtle and a rabbit respectively. .

    Posted via the PriusChat mobile app.
     
  19. aadnanzia

    aadnanzia Junior Member

    Joined:
    Feb 24, 2019
    16
    7
    0
    Location:
    Pakistan
    Vehicle:
    2012 Prius Plug-in
    Model:
    N/A
    Well the EV HV mode button switches the car to use the EV range (If available from wall charge or from excessive regen).
    I will try making a short video of it and post it here soon for better understanding and for my better guidance from you guys. But here's the summary of it.

    1. The button should lit up and turn off the EV icon on the screen, which it doesn't even do all the time under 5kph aswell (Sometimes I press it it will turn on or off the EV icon other times nothing). But above 5kph it doesn't respond like the button is dead or something.

    2. The other wierd thing is. When the EV range is exhausted and the car comes to a complete stop at a traffic light or something , the car sounds a beep and the display shows a message that's "EV range is not available and the car can not switch into EV mode" (since the message is in Japanese I got it translated via Google translator and it communicates more or less the same meaning. This beep and message comes when ever I come to a stop when EV range is exhausted without me pressing any button.

    So now the strange behavious I have observed is that the car will try to switch to EV range automatically whenever I come to a stop. And it switches back to HV automatically whenever the EV range drops below 5 kms. So I have to drop my speed below 5 kph and then press the button to go into my intended required mode. It's really annoying.

    Posted via the PriusChat mobile app.
     
  20. hieronymous

    hieronymous Member

    Joined:
    Oct 14, 2012
    154
    92
    0
    Location:
    Auckland, New Zealand
    Vehicle:
    2013 Prius Plug-in
    Model:
    N/A
    Okay, good description. The "EV range is not available..." message normally should never appear unless the HV/EV button is pressed while the car has no wall charge, so it looks to me like perhaps the mode switch is faulty (hopefully nothing more serious), and/or a faulty sensor(s), and requires dealer servicing.

    Your comment on what happens above/below 5kph is curious. I only know of one factor associated with that speed, which is that down there, there is no regen - when I go downhill on my driveway to the garage, the dash energy flow arrows are from the battery to the motor, opposite to the regen that would display at a higher speed going downhill...

    As for regen, when you have wall-charged does your dash range value drop as seems normal, when you driving along? If you have a long enough hill to go down, does your dash range increase with regen?

    If you have wall-charged, the car is designed to not use the EV range while in HV - the range should not drop. What is happening to your EV range when you use HV?
     
    #20 hieronymous, Mar 2, 2019
    Last edited: Mar 2, 2019