clicking/grunting noise after cold start, intermittent

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by stedman98, Nov 19, 2009.

  1. stedman98

    stedman98 New Member

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    Jun 4, 2008
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    Location:
    Virginia
    Vehicle:
    2008 Prius
    Model:
    N/A
    Occasionally when I start up Prius in the morning or after work, while the brake i depressed, I am getting a clicking/grunting sound (sounds like a series of short, fast grunts, actually) from under the dash on the passenger's side. It also happens when I have been driving awhile, when stopped at a traffic light, again with the brake depressed. It will go weeks with no noise, then do it several times in a day. HELP! Dealer is clueless because we can't replicate it. I have had the Prius over a year, and it is not one of the usual pump noises that I am accustomed to. I am going on a trip soon, and would like to have this resolved. I purchases Prius in Mississippi, but recently moved to Northern Virginia. Any ideas, you gurus out there?
    Thanks in advance!
     
    #1 stedman98, Nov 19, 2009
  2. dogfriend

    dogfriend Human - Animal Hybrid

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    #2 dogfriend, Nov 20, 2009
  3. morpheusx

    morpheusx Professor Chaos

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    Vehicle:
    2011 Prius
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    Three
    Mine does that as well. It sounds a little more like a faint honking noise, and you also only hear it while sitting at a stop light. Mine has been doing it now for over 2 years now (40,000 miles). It seems to be most frequent at about 30 - 40 degrees farenheit. If it is above 60 degrees it is rare that it happens. I've grown used to it. When I hit 100,000 miles I'll have the brake lines flushed and bled.
     
    #3 morpheusx, Nov 21, 2009
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