1. Attachments are working again! Check out this thread for more details and to report any other bugs.

Prius 2017 electric package noise

Discussion in 'Gen 4 Prius Care, Maintenance and Troubleshooting' started by Matella, Feb 11, 2024.

  1. Matella

    Matella Junior Member

    Joined:
    Aug 2, 2021
    12
    2
    0
    Location:
    Toronto
    Vehicle:
    2017 Prius
    Model:
    Base
    Hello to everyone. I have a constant noise coming from the electrical package which is located on the driver's side. I went to several service and they told me not to worry, as it is normal. When I bought the car this noise did not exist. When it's cold this noise gets louder. Any ideas? Thank you
     
  2. AzWxGuy

    AzWxGuy Weather Guy

    Joined:
    May 22, 2011
    953
    482
    0
    Location:
    Tucson, AZ
    Vehicle:
    2021 Prius
    Model:
    Limited
    IDK, maybe capacitor squeal. Some high-end juice monitoring goes on in the inverter case. It's not the pesky pedestrian notification system I take it. Prius has always made interesting noises, which are even more interesting when you know what is making them.
     
    Matella likes this.
  3. ChapmanF

    ChapmanF Senior Member

    Joined:
    Mar 30, 2008
    22,812
    14,822
    0
    Location:
    Indiana, USA
    Vehicle:
    2010 Prius
    Model:
    IV
    Sometimes things that are known to vibrate at audible frequencies will be mounted with rubber grommets, or the like, to reduce the propagation of the sound into the rest of the car, and very cold weather makes the rubber harder.
     
    Matella likes this.
  4. Matella

    Matella Junior Member

    Joined:
    Aug 2, 2021
    12
    2
    0
    Location:
    Toronto
    Vehicle:
    2017 Prius
    Model:
    Base
    the noise comes from this part. Is there a reliable service where I can check it? I live in North York, Ontario..Thank you
     

    Attached Files:

  5. bisco

    bisco cookie crumbler

    Joined:
    May 11, 2005
    107,433
    48,785
    0
    Location:
    boston
    Vehicle:
    2012 Prius Plug-in
    Model:
    Plug-in Base
    Inverter whine increases with cold, can you post a video?
     
  6. Matella

    Matella Junior Member

    Joined:
    Aug 2, 2021
    12
    2
    0
    Location:
    Toronto
    Vehicle:
    2017 Prius
    Model:
    Base
    I am trying to upload a video, but the site does not accept it, as the file is large
     
  7. Matella

    Matella Junior Member

    Joined:
    Aug 2, 2021
    12
    2
    0
    Location:
    Toronto
    Vehicle:
    2017 Prius
    Model:
    Base
    This is the message I get when I want to post the video
     

    Attached Files:

  8. Matella

    Matella Junior Member

    Joined:
    Aug 2, 2021
    12
    2
    0
    Location:
    Toronto
    Vehicle:
    2017 Prius
    Model:
    Base
    Here link

     
  9. bisco

    bisco cookie crumbler

    Joined:
    May 11, 2005
    107,433
    48,785
    0
    Location:
    boston
    Vehicle:
    2012 Prius Plug-in
    Model:
    Plug-in Base
    thanks, all i hear is the engine
     
  10. Matella

    Matella Junior Member

    Joined:
    Aug 2, 2021
    12
    2
    0
    Location:
    Toronto
    Vehicle:
    2017 Prius
    Model:
    Base
    Apart from the noise of the engine, if you listen carefully, it is a subtle noise. I can compare it to the sound of a mosquito. You just have to listen carefully
     
  11. bisco

    bisco cookie crumbler

    Joined:
    May 11, 2005
    107,433
    48,785
    0
    Location:
    boston
    Vehicle:
    2012 Prius Plug-in
    Model:
    Plug-in Base
    my hearing isn't very good. hopefully someone else will tune in.
     
  12. Matella

    Matella Junior Member

    Joined:
    Aug 2, 2021
    12
    2
    0
    Location:
    Toronto
    Vehicle:
    2017 Prius
    Model:
    Base
    I don't know why it is so hard to find a good Hybrid car technician in Toronto. Most of them do only the usual car services
     
    bisco likes this.
  13. FuelMiser

    FuelMiser Senior Member

    Joined:
    Jun 29, 2008
    1,253
    851
    0
    Location:
    Monument, CO
    Vehicle:
    2016 Prius
    Model:
    Touring
    Does it make the noise when the ICE off? All I hear is a very loud ICE, too loud IMO.

    A steady hum from the inverter is fine. Also, there's a separate cooling system for the inverter (the small coolant bottle in front) and that pump will also make a hum when operating.
     
    Matella likes this.
  14. Matella

    Matella Junior Member

    Joined:
    Aug 2, 2021
    12
    2
    0
    Location:
    Toronto
    Vehicle:
    2017 Prius
    Model:
    Base
    I'm new to this car and I don't understand some terms, but I wanted to know what is ICE and IMO? Thank you
     
  15. ColoradoBoo

    ColoradoBoo Senior Member

    Joined:
    Jul 19, 2019
    862
    570
    4
    Location:
    Monument, Colorado USA
    Vehicle:
    2017 Prius
    Model:
    Two
    ICE is Internal Combustion Engine. The big black box you have a picture of is your invertor. (In short, the hybrid inverter/converter is responsible for boosting the voltage from the DC hybrid battery from 200v to 500v in order to create the three phase power needed for MG1 (motor generator) and MG2. The inverter also supports voltage lowering conversion from the hybrid battery to the 12v system.)
    The Prius is a very complicated hybrid system which means it runs off electricity stored in the big battery under the rear seat in your car. It has an MG1 and an MG2 (motor generator) that drives the powertrain...the car doesn't actually drive from the ICE engine, that's used to give the car electricity and, also, the radiator heat is used to heat the car. The air conditioning is a high-tech electrical compressor, doesn't use the ICE engine at all (except for electricity), which is a very cool invention.
    A good resource for learning about your hybrid is The Car Care Nut on YouTube....he even has a video on the strange noises it makes (like when you open your driver's door.) You have a 2017 so I don't think you have the infamous "UFO" speaker which is just a speaker on the front of the car that turns on when you drive slow or are backing up....the new RAV-4 hybrids have a very loud UFO speaker, I can hear my neighbors from my garage when he drives down the street.
    Because of all the electrical components folks who don't drive the car a lot have a lot of problems because it wants to recharge the batteries often. I've found even letting the car sit for a week makes the 12-volt battery low.
     
    Matella likes this.
  16. Mendel Leisk

    Mendel Leisk Patron saint of newly poured sidewalks

    Joined:
    Oct 17, 2010
    54,152
    37,942
    80
    Location:
    Greater Vancouver, British Columbia, Canada
    Vehicle:
    2010 Prius
    Model:
    Touring
    And "IMO" is "In My Opinion".

    Have you tried Toyota dealership service departments?

    Dealerships? They may be right? Not hearing anything unusual in the video you posted. To be fair it may be hard to capture the sound you're hearing.

    How long have you had it?
     
  17. bisco

    bisco cookie crumbler

    Joined:
    May 11, 2005
    107,433
    48,785
    0
    Location:
    boston
    Vehicle:
    2012 Prius Plug-in
    Model:
    Plug-in Base
    there are few qualified hybrid mechs anywhere because they are so busy with gassers it isn't worth their time
     
    Matella likes this.
  18. ChapmanF

    ChapmanF Senior Member

    Joined:
    Mar 30, 2008
    22,812
    14,822
    0
    Location:
    Indiana, USA
    Vehicle:
    2010 Prius
    Model:
    IV
    and, to the OP's question, the inverter circuitry does that by switching electric currents on and off several thousand times a second to create waves of the right voltage and shape. (There's an old post that's about a different kind of inverter, for making 60Hz household power, with some pictures of how that wave-shaping by rapid switching works, for anyone interested in those details.)

    Anyway, when those electric currents are rapidly switched on and off, so also are the magnetic fields that go with them, and those will slightly wiggle any of the magnetic metal in the area, at the same several-thousand-times-a-second frequency. Those vibrations are sounds in a range a person can hear, a subtle noise you can compare to the sound of a mosquito. Just what it does.
     
    Matella likes this.
  19. FuelMiser

    FuelMiser Senior Member

    Joined:
    Jun 29, 2008
    1,253
    851
    0
    Location:
    Monument, CO
    Vehicle:
    2016 Prius
    Model:
    Touring
    Boo, that's complete BS. The ICE definitely drives the wheels through the Hybrid Synergy Drive. I suggest you review Hybrid Synergy Drive - Wikipedia

    Now, there were cars, not Toyota, that used an ICE to run a generator that powered the car, but Toyota's HSD
     
    Harters likes this.
  20. Matella

    Matella Junior Member

    Joined:
    Aug 2, 2021
    12
    2
    0
    Location:
    Toronto
    Vehicle:
    2017 Prius
    Model:
    Base
    Thank you all for the explanations. Now I need to find a reliable hybrid car technician in Toronto. It will probably take me a long time to find it
     
    Danno5060 likes this.