1. Welcome to Tundras.com!

    You are currently viewing as a guest! To get full-access, you need to register for a FREE account.

    As a registered member, you’ll be able to:
    • Participate in all Tundra discussion topics
    • Transfer over your build thread from a different forum to this one
    • Communicate privately with other Tundra owners from around the world
    • Post your own photos in our Members Gallery
    • Access all special features of the site

4Hi Light Flash Diagnosis

Discussion in '2.5 Gen Tundras (2014-2021)' started by texasrho83, Jan 3, 2024.

  1. Jan 3, 2024 at 4:15 PM
    #1
    texasrho83

    texasrho83 [OP] Old Member

    Joined:
    Mar 30, 2017
    Member:
    #7025
    Messages:
    10,645
    Gender:
    Male
    First Name:
    Charles
    Conroe TX
    Vehicle:
    2016 DC MGM 4x4
    See build link
    So after my New Year beach excursion and the subsequent revelation that my 4WD is inoperable, I took it to my mechanic today and he called me back with a bad actuator (diff) diagnosis.

    Apparently they open up the front diff to change it as they asked me for the particular fluid I put in it should they get approval for the work.

    Estimate: $940
     
  2. Jan 3, 2024 at 5:41 PM
    #2
    Ruggybuggy

    Ruggybuggy Seasoned Veteran

    Joined:
    Sep 23, 2019
    Member:
    #36508
    Messages:
    3,721
    Gender:
    Male
    First Name:
    Dave
    NW ON, CANADA
    Vehicle:
    2016 Tundra OR
    The diff front diff doesn't have to be opened up to change out the actuator. You don't even loose any diff fluid changing it. Why are they asking you about the fluid type? If you are even slightly mechanical it's pretty easy to change it out yourself.
     
    Wynnded likes this.
  3. Jan 3, 2024 at 5:45 PM
    #3
    Ruggybuggy

    Ruggybuggy Seasoned Veteran

    Joined:
    Sep 23, 2019
    Member:
    #36508
    Messages:
    3,721
    Gender:
    Male
    First Name:
    Dave
    NW ON, CANADA
    Vehicle:
    2016 Tundra OR
    Wynnded likes this.
  4. Jan 3, 2024 at 5:45 PM
    #4
    texasrho83

    texasrho83 [OP] Old Member

    Joined:
    Mar 30, 2017
    Member:
    #7025
    Messages:
    10,645
    Gender:
    Male
    First Name:
    Charles
    Conroe TX
    Vehicle:
    2016 DC MGM 4x4
    See build link
    Just going off what they told me. I perused YouTube but didn't see anything for my year model.
     
  5. Jan 3, 2024 at 5:47 PM
    #5
    Ruggybuggy

    Ruggybuggy Seasoned Veteran

    Joined:
    Sep 23, 2019
    Member:
    #36508
    Messages:
    3,721
    Gender:
    Male
    First Name:
    Dave
    NW ON, CANADA
    Vehicle:
    2016 Tundra OR
    Just posted a video. Who ever is doing the repair is taking advantage of your lack of info. Not meant to insult.
     
  6. Jan 3, 2024 at 6:00 PM
    #6
    texasrho83

    texasrho83 [OP] Old Member

    Joined:
    Mar 30, 2017
    Member:
    #7025
    Messages:
    10,645
    Gender:
    Male
    First Name:
    Charles
    Conroe TX
    Vehicle:
    2016 DC MGM 4x4
    See build link
    Looks like he did drain the old fluid out so makes sense they'd ask for the diff fluid I use
     
  7. Jan 3, 2024 at 6:23 PM
    #7
    Ruggybuggy

    Ruggybuggy Seasoned Veteran

    Joined:
    Sep 23, 2019
    Member:
    #36508
    Messages:
    3,721
    Gender:
    Male
    First Name:
    Dave
    NW ON, CANADA
    Vehicle:
    2016 Tundra OR
    ....but there is no reason to drain the fluid to change the actuator and he should know what diff fluid it requires. Your mechanic has limited knowledge on Toyota vehicles but he's certainly profiting from it.
     
  8. Jan 3, 2024 at 6:26 PM
    #8
    texasrho83

    texasrho83 [OP] Old Member

    Joined:
    Mar 30, 2017
    Member:
    #7025
    Messages:
    10,645
    Gender:
    Male
    First Name:
    Charles
    Conroe TX
    Vehicle:
    2016 DC MGM 4x4
    See build link
    He's asking me because he knows I use a specific kind that was supplied when they did the gear swap.
     
  9. Jan 3, 2024 at 6:29 PM
    #9
    Ruggybuggy

    Ruggybuggy Seasoned Veteran

    Joined:
    Sep 23, 2019
    Member:
    #36508
    Messages:
    3,721
    Gender:
    Male
    First Name:
    Dave
    NW ON, CANADA
    Vehicle:
    2016 Tundra OR
    As already stated, no reason to change the fluid in the first place.
     
  10. Jan 3, 2024 at 6:30 PM
    #10
    texasrho83

    texasrho83 [OP] Old Member

    Joined:
    Mar 30, 2017
    Member:
    #7025
    Messages:
    10,645
    Gender:
    Male
    First Name:
    Charles
    Conroe TX
    Vehicle:
    2016 DC MGM 4x4
    See build link
    Yet the video you posted showed a drain and fill.
     
  11. Jan 3, 2024 at 6:38 PM
    #11
    Ruggybuggy

    Ruggybuggy Seasoned Veteran

    Joined:
    Sep 23, 2019
    Member:
    #36508
    Messages:
    3,721
    Gender:
    Male
    First Name:
    Dave
    NW ON, CANADA
    Vehicle:
    2016 Tundra OR
    I just found a quick video showing how easy it is to change the actuator. He's just servicing the diff. You do not have to drain the oil to change the actuator.

    Anyhow, I'm done. Good luck to you sir.
     
  12. Jan 4, 2024 at 7:40 AM
    #12
    radon222

    radon222 '21 CrewMax / '18 4Runner

    Joined:
    Feb 1, 2019
    Member:
    #25417
    Messages:
    322
    Gender:
    Male
    First Name:
    Ed
    NW Arkansas
    Vehicle:
    2021 CrewMax TRD OffRoad
    Stock for now
    Just spit ballin here. But considering the OP didn't come in knowing ahead of time that it definitively was a faulty actuator; wouldn't it make sense to drain the diff fluid and look for shiny bits as part of the initial diagnostic?
     
  13. Jan 4, 2024 at 8:06 AM
    #13
    yakeng

    yakeng 3URFE Apologist

    Joined:
    Mar 9, 2023
    Member:
    #93554
    Messages:
    795
    Vehicle:
    2020 Tundra 4x4; 2014 Sequoia;
    ECGS Bushing; GCS Cooler RASHD; Fox 2.0
    At the price of gear oil, no, that does not make sense. If it isn't turning on, it is the actuator. This mechanic sounds like a parts cannon mechanic.
     
    Ruggybuggy likes this.

Products Discussed in

To Top