Knocking rattling noise 2012 Prius v it is still a lowercase v for the Prius v wagon, not an upperca

Discussion in 'Prius v Care, Maintenance and Troubleshooting' started by Dain Hill, Feb 6, 2017.

  1. Dain Hill

    Dain Hill New Member

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    Hey guys. I know there's quite a lot of threads about this issue. My Prius v it is still a lowercase v for the Prius v wagon, not an uppercase. Only the 2010 Prius used uppercase Roman numerals for model designation is making knocking or rattling noise every morning before I go to work. Sometimes it happens other times it doesn't. Was there ever a initial fix from Toyota on this problem? Is it something I really need to worry about? The temperature here right now only gets low of 30 degrees right now in the morning. It's similar to issue here.

    Loud engine sound at start-up | PriusChat
     
    #1 Dain Hill, Feb 6, 2017
  2. Samprocat

    Samprocat Active Member

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    How many miles
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    Do you do anual Toyota or recognized shop inspection
    What are your usual routine driving
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    Or have in the past
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    And a lot more
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    Give as much information you can
     
    #2 Samprocat, Feb 7, 2017
  3. Air_Boss

    Air_Boss Senior Member

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    Important to note that most who report experiencing the knock/rattle-at-startup do not experience it regularly, purely a rare anomaly.

    I've had it occur once in five years with the 2012 v Five, and that was very early on when I inadvertently cycled the START button through start-ready-off-restart, likely resulting in leftover unburned fuel in the intake.
     
    #3 Air_Boss, Feb 7, 2017
  4. Sam Spade

    Sam Spade Senior Member

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    And thus if it is happening almost every morning, it should be checked out.
    Starting with pulling the dipstick and checking the oil level. ;)
     
    #4 Sam Spade, Feb 7, 2017
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