1. plugged-in

    plugged-in Junior Member

    Joined:
    Nov 16, 2011
    22
    4
    Location:
    irvine
    Your Vehicle Year:
    2012 Prius Plug-in
    Is there a difference between full EV mode and the early HV mode where you are in EV(left half of the indicator on the HSI screen)? Aren't you in full electric in both situations? If so, then why would you need to manually toggle between the two modes?
     
  2. ryogajyc

    ryogajyc Active Member

    Joined:
    Aug 30, 2004
    985
    158
    Location:
    Reseda, CA
    Your Vehicle Year:
    2012 Prius Plug-in
    Model:
    Plug-in Advanced
    HV mode will only let you use a small range of the battery making it behave like the regular hybrid Prius. This means at some point, it won't let you drain the battery anymore to travel further on purely EV miles even if you have plenty of energy in the battery. EV mode lets you use the full usable range of the battery. Also, EV mode lets you drive at higher speeds on electricity only.
     
  3. usbseawolf2000

    usbseawolf2000 HSD PhD

    Joined:
    Sep 22, 2004
    13,193
    2,412
    Location:
    Fort Lee, NJ
    Your Vehicle Year:
    2012 Prius Plug-in
    Model:
    Plug-in Base
    In HV mode, the gas engine will kick in for power request more than ~15hp. PHV EV mode raises that to ~50hp. The EV speed limit was also raised from 25mph to 62mph.

    We are still working on the gauges in Torque app so, the horsepower values could be confirmed.
     
  4. john1701a

    john1701a Prius Guru

    Joined:
    Jan 6, 2004
    8,376
    2,092
    Location:
    Minnesota
    Your Vehicle Year:
    2012 Prius Plug-in
    Model:
    Plug-in Advanced
    Also, when the engine fires up while in EV mode, excess electricity will increase the range. 3 times that happened to me this morning when the defroster kicked in. Each time, the EV range increased about 1/2 mile.

    It's a fascinating benefit of the power-split system often overlooked.
    .