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Three Short Beeps

Discussion in 'Gen 2 Prius Technical Discussion' started by Moandain, Sep 15, 2009.

  1. Moandain

    Moandain New Member

    Joined:
    Sep 15, 2009
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    Location:
    USA
    Vehicle:
    2007 Prius
    Model:
    N/A
    I am new to this site and I can not seem to find a listing of beepcodes and what they mean. I guess it is a holdover from work (dell field repair tech)

    The three short beeps started mainly when I get a rough patch of road that shook the car a little and not is seems that it happens whenever. Even when I am just sitting on level ground and not going anywhere.

    I can only guess what is wrong.
    Fluid levels too high or low
    Tire Pressure
    Faulty sensor
    Short in the system somewhere

    I have a few mods in the car also

    Radar detector is wired into the dome light

    Green hybrid EV chip mod

    Computer and Xenarc screen installed for music and gps.

    Any help on what the three short beeps mean would be greatly appreciated.
     
    #1 Moandain, Sep 15, 2009
  2. Vaughn

    Vaughn Junior Member

    Joined:
    Jul 17, 2006
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    Location:
    Lubbock TX
    Vehicle:
    2010 Prius
    Model:
    V
    You only get the 3 short beeps when the driver gets out of the car while it is running and closes the driver's door. I leave my car running when I get out to check my mail at my apartment, car is telling me, you left me running!
     
    #2 Vaughn, Sep 15, 2009
  3. KTPhil

    KTPhil Active Member

    Joined:
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    I would start by removing your mods and seeing if that stops the problem.
     
    #3 KTPhil, Sep 15, 2009
  4. richbyrne

    richbyrne New Member

    Joined:
    May 19, 2004
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    Location:
    New Jersey
    Vehicle:
    2005 Prius
    I am also getting a 3 short beep warning. No warning lights. I only have the EV mod and have had that for 4 years. Does anyone know how to translate the beep codes? I'm sure the OP would ,along with myself, like a beep code translation and a what to do next.
     
    #4 richbyrne, Sep 19, 2009
  5. richbyrne

    richbyrne New Member

    Joined:
    May 19, 2004
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    Location:
    New Jersey
    Vehicle:
    2005 Prius
    It seems the beeps are a signal from the EV mode mod. Maybe something defective in the mod or maybe temp or road surface are at fault. I'm going to try some watchful waiting.

    I found this paper at the following URL. www.eetrex.com/pdf/0705_WP_PHEV_EV_Mode.pdf Relevant part quoted below

    "The EV Mode as part of a PHEV conversion. It is not necessary to use the EV mode in PHEV conversions, yet most PHEV systems rely on it to achieve high mileage (mpg). The systems will do the electrical equivalent of pressing the EV button as
    much as possible, so that the engine will stay off as much as possible. If the engine is off, the mpg is infinite, by definition. Therefore, the average mpg as the engine goes off and on, is higher than it would have been without using the EV Mode.
    Unfortunately, the Prius changes the MFD screen display when it enters the EV Mode, and it beeps 3 times whenever it ends the EV Mode. Therefore, PHEVs that use the EV Mode change screens and beep quite often."
     
    #5 richbyrne, Sep 19, 2009
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