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

2011 Prius Two not II because it is not a 2010 Hidden Menu

Discussion in 'Gen 3 Prius Main Forum' started by TeresaCute, Feb 12, 2017.

  1. TeresaCute

    TeresaCute New Member

    Joined:
    Feb 12, 2017
    3
    0
    0
    Location:
    Los Angeles
    Vehicle:
    2011 Prius
    Model:
    Two
    Can someone please show me how to gain access to the "Hidden Menu" of a 2011 Prius Two, not II, because only 2010 Prius used uppercase roman numerals for model designation? The "Info + Headlights on/off 3 times" trick all over YouTube are apparently for 2009 and older models. I drained my 12V battery by accident a few days ago. It seems to be OK now after a jump start by AAA. It would be nice if I could see the actual voltage from the hidden menu to make sure. Thank you.
     
    #1 TeresaCute, Feb 12, 2017
  2. xliderider

    xliderider Senior Member

    Joined:
    Apr 19, 2012
    7,848
    3,102
    0
    Location:
    Honolulu, HI
    Vehicle:
    2011 Prius
    Model:
    Three
    If you haven't hooked your battery up to a charger after discharging the battery so low that a jump was required, then it's doubtful that the battery is back to optimal condition.

    Buy a cheap multimeter from Walmart, etc (approx. $10 or less) and measure the voltage of your battery at the engine jump terminal and ground with the ignition/power off. Then turn on your headlights, again with the ignition off, and measure the voltage again. Report back with your readings.
     
    #2 xliderider, Feb 12, 2017
    m.wynn likes this.
  3. TeresaCute

    TeresaCute New Member

    Joined:
    Feb 12, 2017
    3
    0
    0
    Location:
    Los Angeles
    Vehicle:
    2011 Prius
    Model:
    Two
    Thank you xliderider. But your suggestion is actually beyond my ability. Hopefully, there is another less technical solution out there. Thank you again.
     
    #3 TeresaCute, Feb 13, 2017
  4. xliderider

    xliderider Senior Member

    Joined:
    Apr 19, 2012
    7,848
    3,102
    0
    Location:
    Honolulu, HI
    Vehicle:
    2011 Prius
    Model:
    Three
    Most autoparts stores that sell batteries will do a free battery test, and some will even give you a printout of the results.
     
    #4 xliderider, Feb 13, 2017
  5. edthefox5

    edthefox5 Senior Member

    Joined:
    Jul 25, 2007
    10,096
    4,795
    0
    Location:
    Clearwater, Florida
    Vehicle:
    2007 Prius
    Model:
    Two
    If it's the original battery it's way over due for replacement. If a light left on killed it then it may begin sulphating
    Which means it will never hold a proper charge again. You may notice your mileage taking a hit as the inverter struggles to keep it charged.
    I don't believe the G3 has the menu you mentioned but a good trick is at night before starting the car turn the headlights on before u boot the car. Watch the lights and see if they dim the slightest bit .
    If you see a dimming even tiny it's getting ready to leave you again.

    Replace it now.
     
    #5 edthefox5, Feb 13, 2017
  6. TeresaCute

    TeresaCute New Member

    Joined:
    Feb 12, 2017
    3
    0
    0
    Location:
    Los Angeles
    Vehicle:
    2011 Prius
    Model:
    Two
    Did the test suggested by edthefox5 the other night. Wasn't happy with the result. Replaced the battery this evening so I can have peace of mind for the next 6 years. Thank you everybody for your input. Happy motoring!!
     
    #6 TeresaCute, Feb 16, 2017
  7. NavyLCDR

    NavyLCDR Active Member

    Joined:
    Oct 15, 2016
    188
    120
    4
    Location:
    Stanwood, WA
    Vehicle:
    2011 Prius
    Model:
    Three
    Car in ACC mode (one press of power switch without pressing brake). Audio system on. Hold down Info Phone button and cycle headlights on and off.
     
    #7 NavyLCDR, Feb 18, 2017
(You must log in or sign up to post here.)