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Buzzing/electrical sound from transmission area

Discussion in '5th Gen 4Runners (2010-2024)' started by Don1, Apr 26, 2024.

  1. Apr 26, 2024 at 3:04 PM
    #1
    Don1

    #1
    Don1 [OP] New Member

    Joined:
    Aug 15, 2023
    Member:
    #34903
    Messages:
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    Male
    4runner SR5, 2019, 63k.
    Recently I noticed an electrical buzzing sound coming from underneath the the truck, around transmission area.
    It’s constant while truck is ON, it doesn’t change when going from N to D.
    No slipping or any transmission problem. Any idea what could this be?
     
    Don1, Apr 26, 2024
    #1
  2. Apr 26, 2024 at 3:25 PM
    #2
    whippersnapper02

    #2
    whippersnapper02 New Member

    Joined:
    Feb 27, 2019
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    First Name:
    Christian
    Vehicle:
    2019 4Runner TRD Offroad Premium
    Probably a loose heat shield but no way to tell until you get under there.
     
    whippersnapper02, Apr 26, 2024
    #2
    Slopemaster likes this.
  3. Apr 28, 2024 at 3:06 PM
    #3
    Daytonaviolet

    #3
    Daytonaviolet TRD Bro

    Joined:
    Mar 13, 2019
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    Bay Area, CA
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    Could it be evap system ?
     
    Daytonaviolet, Apr 28, 2024
    #3
  4. Apr 28, 2024 at 5:20 PM
    #4
    2020 4Runner

    #4
    2020 4Runner New Member

    Joined:
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    Fl
    Vehicle:
    2020 4Runner SR5, 2020 SR5 Tundra DC
    Kind of like a humming noise? That is the evap system. Totally normal. It does it while the vehicle is parked and off as well.
     
    2020 4Runner, Apr 28, 2024
    #4
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