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C unhappy about Leaving sunroof open :(

Discussion in 'Prius c Care, Maintenance and Troubleshooting' started by C4me, Mar 26, 2013.

  1. C4me

    C4me Junior Member

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    Went to the garage tonight and heard a buzzing noise coming from the rear of the cars left side. After investgating the cause seemed to stem from the sunroof nkt being completely closed. seems i accidently left it open 1/2". if i did not notice this would my battery have been discharged by morning?
     
    #1 C4me, Mar 26, 2013
  2. ztanos

    ztanos All-around Geek!

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    The sunroof "shouldn't" have caused what you were hearing. If it's stationary it won't matter...
     
    #2 ztanos, Mar 26, 2013
  3. C4me

    C4me Junior Member

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    The reason I believe that was the cause is because once I started the car and closed the sunroof and shut down the car the noise stopped. The sunroof button would not close until I started the car so that is why I know the car was not turned on. I can not imagine what else it may have been. If the back hatch was not closed all the way would the car make that noise? I did open it to peek into the rear of the car trying to locate the sourse of the humming, however the noise only stopped after closing the sunroof. I do notice that if the sunroof is opened all the way when I exit the car, the dash displays the exclaimation sign in the yellow triangle until I close the sunroof
     
    #3 C4me, Mar 26, 2013
  4. ztanos

    ztanos All-around Geek!

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    Not sure about the hatch, but I don't think so, unless the keys were in it or the lights were on... but not sure about the sunroof. If it has a warning to let you know it's open, then maybe it was the sunroof.
     
    #4 ztanos, Mar 26, 2013
  5. Ashley7

    Ashley7 Active Member

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    Are you sure it was any sort of warning, and not just one of the many normal noises the Prius makes while sitting parked? I can never remember the details, no matter how many times I read about it, but the car has certain things it does, even when off, and it makes noises. I doubt it had anything to do with your sunroof. Whatever it was in the middle of doing likely either coincidentally ended at the same time, or you interrupted the process by turning on the car (not something to worry about either).
     
    #5 Ashley7, Mar 26, 2013
  6. RocMills

    RocMills Active Member

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    Yesterday, for the first time since I got the car, I sat in for about 10-15 minutes after I shut it off. I, too, had read references to odd sounds... and was stunned, minute by minute, listening to the car talk to itself. If I hadn't already known it would do that, I might have been a bit freaked out.
     
    #6 RocMills, Mar 26, 2013
  7. firstrival

    firstrival Member

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    Did the noise happen exactly 5 hours since you last turned off the car?
     
    #7 firstrival, Mar 26, 2013
  8. css28

    css28 Senior Member

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    Here's a quote from my Prius' owner's manual:
    Approximately five hours after the hybrid system is turned off, you may hear
    sound coming from under the vehicle for several minutes. This is the sound
    of a fuel evaporation leakage check and, it does not indicate a malfunction.
    I bet that by turning the car on to close the sunroof you simply interrupted this (natural, proper) function.
    Not a sunroof thing at all, I suspect.
     
    #8 css28, Mar 26, 2013
    RocMills likes this.
  9. C4me

    C4me Junior Member

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    #9 C4me, Apr 3, 2013
  10. gbouten

    gbouten Junior Member

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    The book says 20 minutes after the car is turned off all power is shut down to anything running.
     
    #10 gbouten, May 1, 2013
  11. Fauxknight

    Fauxknight Active Member

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    I heard the humming once when I took some trash out late at night. Good to know that it's just a normal process of the car.
     
    #11 Fauxknight, May 17, 2013
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  12. RocMills

    RocMills Active Member

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    I think all C owners should, at least once, drive the car around for a bit until it is well and truly warmed up... then shut the car down and just sit with it for 30 minutes to get familiar with all the odd sounds that the car makes when we aren't normally around to hear them. :)
     
    #12 RocMills, May 20, 2013
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