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There's something wrong with my prius

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by JSA, Nov 13, 2009.

  1. JSA

    JSA New Member

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    Location:
    North Carolina
    Vehicle:
    2009 Prius
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    N/A
    I have a 2009 prius that I bought in March. I have not had any problems with it until yesterday. I have been averaging around 53 mpg, but yesterday I started having problems. My prius is not maintaining its speed, it is making reving sounds everytime I accelerate, and it is using way too much gas even when I am gliding. I have not changed how I am driving or doing anything different, but my average has dropped to 35 mpg. I am planning on taking it in, but I thought I would go ahead and see if others have had the same experience. Any ideas?
     
    #1 JSA, Nov 13, 2009
  2. qbee42

    qbee42 My other car is a boat

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    This sounds a lot like a failing HV battery. Have the dealer test it.

    Sometimes a failing 12V battery can cause other weird problems, so I can't rule that out, but the symptoms sound more like the HV battery.

    Tom
     
    #2 qbee42, Nov 13, 2009
    1 person likes this.
  3. morpheusx

    morpheusx Professor Chaos

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    It wouldn't be a bad idea to double check you tire pressure.
    If you have had colder weather recently it can make you lose quite a bit of TP.
     
    #3 morpheusx, Nov 14, 2009
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