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LSD Differential

Discussion in '2nd Gen. Tacomas (2005-2015)' started by mcgiiver, Jul 28, 2009.

  1. Jul 28, 2009 at 2:35 PM
    #1
    mcgiiver

    mcgiiver [OP] Well-Known Member

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    On an '09 Access cab 4 x4, 4 cyl., non TRD. If I understand things correctly, the LSD system really has nothing to do with the differential, it is simply a brake system computer that applies brakes to a rear wheel when it senses wheelspin?

    So the actual differential is the same as a regular open rear? There are no clutches inside correct?
     
  2. Jul 28, 2009 at 3:15 PM
    #2
    johnecon2001

    johnecon2001 Well-Known Member

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  3. Jul 28, 2009 at 3:15 PM
    #3
    jhodge83

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

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    wat?
    ^^ yup yup...completely open rear diff
     
  4. Jul 28, 2009 at 5:59 PM
    #4
    allrsdup

    allrsdup Well-Known Member

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    i dont know guys myy 08 the windo sticker sais "limited slip differential" not automatic lsd is it diff on sports maybe? all i know is i spin both tires in dirt.
     
  5. Jul 28, 2009 at 5:59 PM
    #5
    jhodge83

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

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    wat?
    thats b/c its an 08...all 09's are auto LSD
     
  6. Jul 28, 2009 at 6:09 PM
    #6
    mcgiiver

    mcgiiver [OP] Well-Known Member

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    On the '09 models, the electronically controlled limited slip is available as part of the TRD option.
     
  7. Jul 28, 2009 at 6:14 PM
    #7
    jhodge83

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

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    wat?
    its a standard on the 09's....not just TRD's.
     
  8. Jul 28, 2009 at 7:00 PM
    #8
    mcgiiver

    mcgiiver [OP] Well-Known Member

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    I am looking at the brochure right now.

    Automatic Limited Slip Differential (Auto LSD) is standard on all models.

    Electronically controlled locking rear differential is on V6 models only and then only with the TRD package.

    Shall I scan the page for you?

    As discussed before, the Auto LSD is not a true limited slip diff , only a braking feature.
     
  9. Jul 28, 2009 at 7:02 PM
    #9
    FL4x4Taco

    FL4x4Taco Well-Known Member

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    Sales dude stated the same thing when I was looking for a new '08/'09. Tried telling me that the LSD and Locker were almost the same thing, I told him not so my friend.
     
  10. Jul 28, 2009 at 7:11 PM
    #10
    jhodge83

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

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    wat?

    read ur quotes sweetheart....U are comparing 2 different things...first u stated limited slip and now ur talking locker...BIG difference. yes the locker is only offered in TRD OR's...and the auto LSD is standard on all 09 models...
     
  11. Jul 28, 2009 at 7:40 PM
    #11
    mcgiiver

    mcgiiver [OP] Well-Known Member

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    I am fully aware of the difference between a locker and a limited slip diff. The point is that what Toyota is calling a limited slip differential in their Auto LSD is not one at all. The closest thing they have to getting both wheels to turn simultaneously is the electronic locker.

    If they want to call the Auto LSD a traction device, a wheelspin control device or whatever, fine, but its not a limited slip differential ( nor a locker).
     
  12. Jul 28, 2009 at 7:52 PM
    #12
    jhodge83

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

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    wat?
    as you pointed out in your brochure, they are not labeling it as only an 'LSD' nor a locker. it is what it is. the auto lsd will get both wheels to turn in a loss of traction situation "similar" in the way a mechanical LSD would. the auto LSD + TRAC as a standard feature is not a bad option. its no locker + ATRAC + auto LSD like the OR's have, but its something none the less.

    but back to the topic at hand, i was going to bat w/ u over the fact that u stated auto LSD's were only available in TRD's, which is not the case. everyone in 09 gets the auto LSD and the OR gets the auto LSD and the locker. i'm kinda of glad that i got the auto LSD and TRAC since installing a locker will be simple and i still get go have the auto LSD. the reason that they went to the auto LSD is probably issues with getting a mechanical LSD to work with the TRAC. some 05-08 models came w/ the mechanical LSD and VSC
     
  13. Jul 28, 2009 at 7:54 PM
    #13
    allrsdup

    allrsdup Well-Known Member

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    so mine is mechanical lsd then i assume? good for off roading
     
  14. Jul 28, 2009 at 7:55 PM
    #14
    Brunes

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    Yes...The 08 is a mech LSD in the sports. It's better than nothing- you can use the e-brake as a poor mans locker...but I'd rather have an open diff with a locking option than the LSD for what I do...
     
  15. Jul 28, 2009 at 7:58 PM
    #15
    jhodge83

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

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    wat?
    definately mechanical. i have offroaded both my old 07 sport w/ mech LSD and now my 09 sport w/ auto LSD. i couldnt tell you a true difference b/c the 09 is 4x4 and the 07 was 4x2. i'd rather offroad in 4x4 then see the difference between the auto vs mech in 4x2..haha
     
  16. Jul 28, 2009 at 8:13 PM
    #16
    allrsdup

    allrsdup Well-Known Member

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    i gotcha i was just curios if i would get stuck a lot with lsd instead of a locker.
     
  17. Jul 28, 2009 at 8:33 PM
    #17
    jhodge83

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

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    wat?
    4x4 and LSD is better than 4x4 and nothing. locker would perform better and get u through some more stuff though
     
  18. Jul 28, 2009 at 8:45 PM
    #18
    senna

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    At least on the 09,LSD does not operate in 4WD only 2WD mode.

    So in 4x4, I guess you still have trac control.
     
  19. Jul 29, 2009 at 12:48 PM
    #19
    Trauma85

    Trauma85 Well-Known Member

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    Ok, what every one in the thread is refering to, is the ABS.. THE LSD is really in the diff....... For anyone that doesnt belive me, drain your diff oil, and put fill it with 75-90 oil, and dont add the lsd additive, drive your truck around the block. You'll think your rear end is falling apart. The LSD just senses the spider gears.
     
  20. Jul 29, 2009 at 1:01 PM
    #20
    Brunes

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    Do not concur- The 2009's ALSD is a differential braking system- A mechanical LSD is in the differential housing. ALSD uses the brakes to control wheel spin, where a mech LSD makes the gear adjustments in the differential.

    You are right tho- If you have a mech LSD and you do not properly lube it you are going to think it's imploding. But this system is just the brakes...
     
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