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Rear-end noise on 2009 4x4 Sport

Discussion in '2nd Gen. Tacomas' started by kbenoit001, Feb 24, 2009.

  1. Feb 24, 2009 at 2:21 PM
    #1
    kbenoit001

    kbenoit001 [OP] Active Member

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    I'm hearing an unfamiliar sound and was wondering if someone can help me pinpoint the problem. I have a 2009 4x4 Sport.

    When my rear tires or on an uneven surface (right rear higher than left rear especially) and I make a fairly quick turn, I get a beep followed by a "clicking" in the rear end. The best way for me to describe the sound is that it sounds like a slipping gear. Now, I am assuming there is something wrong with the limited slip. I am not mechanically familiar enough with differentials to pinpoint exactly what the sound is but I know it is abnormal. It is only when the limited slip activates that I hear this noise. The truck drives normally on the road even when accelerating hard.

    Can someone explain how this limited slip works and what exactly I am hearing?
     
  2. Feb 24, 2009 at 2:30 PM
    #2
    Delmarva

    Delmarva Mayor of TW

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    the 09 limited slip isn't a mechanical device anymore... 05-08 had mechanical LSDs in the Sports.
     
  3. Feb 24, 2009 at 2:37 PM
    #3
    kbenoit001

    kbenoit001 [OP] Active Member

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    So, how does it work then? Brakes? Any ideas on the noise?
     
  4. Feb 24, 2009 at 2:41 PM
    #4
    SC4333

    SC4333 Well-Known Member

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    I don't know this by first hand experience in a '09 Taco but I would be willing to bet the 'beep' is your truck letting you know the traction control/stability control is kicking in. The 'clicking' could probably be attributed to the pulsing of your brakes to correct the issue (auto-LSD). Like Delmarva said, the new LSD is fully electronic and not mechanical.

    It works by applying the brakes to whatever wheel loosing tracking, thus redirecting power to the wheel with more traction.
     
  5. Feb 24, 2009 at 2:41 PM
    #5
    Delmarva

    Delmarva Mayor of TW

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    No idea on how it works really -- I'm assuming the ECU senses wheel slippage and brakes the slipping wheel... much like VSC me thinks...
     
  6. Feb 24, 2009 at 2:48 PM
    #6
    kbenoit001

    kbenoit001 [OP] Active Member

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    That makes sense. If anyone with an '09 has experienced this, I would appreciate your feedback. It sure is an odd sound for a component that is working properly.
     
  7. Feb 24, 2009 at 2:51 PM
    #7
    trcksr4grls

    trcksr4grls Prayers for Bill and Michelle

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    I would say if an '09 take it to the dealership...lol
     
  8. Feb 24, 2009 at 2:55 PM
    #8
    kbenoit001

    kbenoit001 [OP] Active Member

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    3 Inch Toytec Lift, Real AAL, Wheels and tires. Working on more

    Oh, I have an appointment at 8am tomorrow. I just like to know what I'm talking about when I deal with those wahoos.
     
  9. Feb 24, 2009 at 2:56 PM
    #9
    trcksr4grls

    trcksr4grls Prayers for Bill and Michelle

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    LMAOOOOOOOO he said wahoo's!!!!
     
  10. Feb 24, 2009 at 3:00 PM
    #10
    kbenoit001

    kbenoit001 [OP] Active Member

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    I'm a big fisherman :D
     
  11. Feb 24, 2009 at 3:25 PM
    #11
    jhodge83

    jhodge83 Any dog under 50# is a cat and cats are useless... Thor

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    wat?
    the clicking and beeping is the TRAC and/or auto lsd kicking in. if the wheels are on uneven surfaces, the comp takes that into account and adjusts accordingly. no need for a dealer...its what its supposed to do
     
  12. Feb 24, 2009 at 3:32 PM
    #12
    kbenoit001

    kbenoit001 [OP] Active Member

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    Ok, someone with an '09, that's great. So you've experienced this? A clicking/slipping sound?
     
  13. Feb 24, 2009 at 3:36 PM
    #13
    jhodge83

    jhodge83 Any dog under 50# is a cat and cats are useless... Thor

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    wat?
    yes....offroad and taking a sharp turn. and actually, i think i misspoke before...its the VSC thats kicking in. its saying basically that it deems whatever ur doing to be unstable and the vehicle could lose control. so it overrides what ur doing and sends info to the sensors and makes it do what it wants. completely normal. i got it a lot while offroading through mud in 4hi.
     
  14. Feb 24, 2009 at 3:41 PM
    #14
    kbenoit001

    kbenoit001 [OP] Active Member

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    That's great, thanks for the input. A little disappointing though, sometimes I like to be unstable and out of control.
     
  15. Feb 24, 2009 at 3:46 PM
    #15
    jhodge83

    jhodge83 Any dog under 50# is a cat and cats are useless... Thor

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    wat?
    u can tuen the VSC off by sitting at a stand still, pressing and holding the buttom that looks like a truck peeling out, and u'll see the VSC off and i think the auto lsd lights turn on. do that and try it again and see what u get
     
  16. Feb 24, 2009 at 3:57 PM
    #16
    surfsupl

    surfsupl Well-Known Member

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    Rear Diff Breather~ 5100's ~Fog Light Anytime~Tint~TRD Seat Covers~Weather Tech's~Pioneer H.U.~Lift~Eibach Springs~LED's......blah...blah...blah
    Read page 283 of your owners manual.

    "Tips for driving in various conditions"

    .Four-wheel drive models-
     
  17. Feb 24, 2009 at 5:14 PM
    #17
    WNYTACOMA

    WNYTACOMA Well-Known Member

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    These trucks come with an owners manual?...
     
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