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2016 4R SR5 Front Differental failure at 18,000 miles

Discussion in '5th Gen 4Runners (2010+)' started by 4Runner_Patrick, Feb 21, 2017.

  1. Feb 21, 2017 at 5:24 PM
    #1
    4Runner_Patrick

    4Runner_Patrick [OP] New Member

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    Hello all,


    Began to notice a grinding / groaning vibration most noticeable between 25 and 40 MPH in temps below 40 F. Goes away at highway speeds or when in 4WD. Tech drove the 4R and confirmed the issue. Toyota indicated the entire front differential needed to be replaced. According to the dealer the front diff. was an expired part and a new part was ordered. After, installing the updated part [41110-35A91] the vibration went away!


    Apparently this is a common problem dating back to 2004. Hoping someone here knows if this is just a temporary fix or a permanent fix? I have read others have solved this problem with an after- market bushing from East Coast Gear Supply.

    Thoughts or comments appreciated.


    Thanks
     
    Last edited: Feb 24, 2017
    mcharfauros and Jean T like this.
  2. Feb 21, 2017 at 6:21 PM
    #2
    SWTrail

    SWTrail New Member

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    From what I understand it's the left front needle bearing that supports where the CV leaves the diff. It's semi common, more so on lifted Runners. ECGS makes a bushing that eliminates the needle bearing and should fix it. From what I've seen and read it's because the carrier is cast rather than machined and it's hit or miss if your carrier will have slop that causes needle bearing failure and this issue. I've read guys have the problem as early as 5k miles and some never get it.
     
    mcharfauros likes this.
  3. Feb 24, 2017 at 3:38 PM
    #3
    4Runner_Patrick

    4Runner_Patrick [OP] New Member

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    Agreed. Still unclear to me if the new differential is a permanent fix.
     
    mcharfauros likes this.
  4. Feb 25, 2017 at 1:23 PM
    #4
    yardsale

    yardsale New Member

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    Op, what is your build date? Did your dealer say when Toyota began usingthe updated parts at the factory?
     
  5. Feb 25, 2017 at 2:14 PM
    #5
    4Runner_Patrick

    4Runner_Patrick [OP] New Member

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    Build date- 2/2016 I had to wait 6 weeks for the part as I was #77 in the back order list. He said the old part was failing all over the country. Your dealer can probably tell you which part is in your truck...They were still selling the expired part with no lead time...He did not know the specifics of why it had the old part... I did verify that 41110-35A91 is the current revised part number. Truck drives like it should now. There were still 80 guys on the list when I had it repaired...
     
    Last edited: Feb 25, 2017
    mcharfauros likes this.
  6. Feb 25, 2017 at 4:04 PM
    #6
    yardsale

    yardsale New Member

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    Thanks. Mines an 12/16 build. Going to have to crawl under and look, hopefully it has a tag on it withthr part number.
     
    mcharfauros likes this.

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