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A-trac in 4lo on all 2016 4x4 Models Non Trd Offroad

Discussion in '3rd Gen. Tacomas (2016-2023)' started by mulkey, Jun 21, 2016.

  1. Jun 21, 2016 at 6:10 AM
    #1
    mulkey

    mulkey [OP] Member

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    I was out wheeling the other day, at one point in 4lo. I put the truck into some difficult spots and noticed a symbol flashing that was simular to the trac symbol on the dash, i could hear the tires slipping and brakes working. All 4 wheels would turn even with one in the air. I thought we had open diffs in 4 lo on the non trd offroad models. I see that same symbol on my wifes 2015 trail 4runner when she is in 4lo with a-trac. Thoughts?
     
  2. Jun 21, 2016 at 6:21 AM
    #2
    KenLyns

    KenLyns 8.75" Third Member

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    It's possible Toyota enabled traction control in 4lo for 3rd gens (like it works in 4hi). The system can't generate as much clamping pressure as A-Trac because there's no intake vacuum when you step on the gas.
     
    Joe23 likes this.
  3. Jun 21, 2016 at 6:41 AM
    #3
    William Mulkey

    William Mulkey Will

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    better than nothing i guess, no need for yellow wire mods anymore
     
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  4. Jun 21, 2016 at 8:16 AM
    #4
    MOC221_

    MOC221_ 3 pedal metal

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    Interesting... Perhaps that's one reason why there's an electric brake booster on the OR?!


    Frank
     
  5. Jun 21, 2016 at 8:34 AM
    #5
    KenLyns

    KenLyns 8.75" Third Member

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    It's the only reason for the electric brake pump on the OR. ;) 2005-2008 OR had the normal vacuum booster, since A-Trac wasn't introduced until 2009.
     
  6. Jun 21, 2016 at 8:47 AM
    #6
    16taco

    16taco Well-Known Member

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    Thank u for posting this . People tell me 4 low is open diff but that is not true, all 4 wheels spin in 4 lo on my 16 sport, not sure if it is atrac or limited slip though?
     
  7. Jun 21, 2016 at 9:17 AM
    #7
    Woodrow F Call

    Woodrow F Call Kindling crackles and the smoke curls up...

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    So adding some electronic brake boost would be a good thing?
     
  8. Jun 21, 2016 at 9:19 AM
    #8
    Large

    Large Red

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    open diff is open diff, putting the truck in 4L doesn't lock anything.
     
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  9. Jun 21, 2016 at 9:22 AM
    #9
    2016/7544G

    2016/7544G Well-Known Member

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    Yes. Both A-Trac and crawl control apply torque to the opposite side of the axle by applying brake to the tire that has no traction. This effectively works like a locked differential.
     
  10. Jun 21, 2016 at 9:28 AM
    #10
    16taco

    16taco Well-Known Member

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    Ok, technically your right ,,, but most people throw that term around meaning no assistance from atrac or limited slip. Something is making all four wheels spin in 4 lo ,,, so u tell me
     
  11. Jun 21, 2016 at 9:35 AM
    #11
    jberry813

    jberry813 Professional Fluffer Moderator

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    ...too much shit to list.
    It's not that complicated. Brakes applied to slipping wheels. We've done it long before your nanny electronics do it for you. But it's still an open diff.
     
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  12. Jun 21, 2016 at 9:52 AM
    #12
    16taco

    16taco Well-Known Member

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    So what your saying is you dont know what this is called ( brakes applied to slipping wheels)
     
  13. Jun 21, 2016 at 10:01 AM
    #13
    evilfij

    evilfij Well-Known Member

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    Can we get a video? Because that would be awesome if true. Four wheel etc is very effective in mud and deep snow.
     
  14. Jun 21, 2016 at 10:01 AM
    #14
    jberry813

    jberry813 Professional Fluffer Moderator

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    ...too much shit to list.
    I can't tell if you're serious or just ignorant. It's called traction control.
    For those of that do it without electronic assist in an off-road situation, it's commonly referred to as brake pedal modulation.
     
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  15. Jun 21, 2016 at 10:07 AM
    #15
    16taco

    16taco Well-Known Member

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    Hmm so traction control is the same as limited slip and atrac ok got it
     
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  16. Jun 21, 2016 at 10:07 AM
    #16
    Woodrow F Call

    Woodrow F Call Kindling crackles and the smoke curls up...

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    I understand the idea..... I'm just wondering if adding some type of electronic brake booster could be a feasible mod in the future for those of us without an OR.
     
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  17. Jun 21, 2016 at 11:12 AM
    #17
    16taco

    16taco Well-Known Member

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    I crossed over a dry creek and my right front wheel and left rear wheel were both in the air at the same time and i thought i was stuck, while being in 4 lo I applied more gas and heard the breaks making noises and I got out of the creek and up the hill. For the technical wizards out there that like to argue terms what is this called? Trac, atrac, auto lsd,or like someone called it earlier traction control?
    2016 sport 4x4
     
  18. Jun 21, 2016 at 11:19 AM
    #18
    Large

    Large Red

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    It's a combination of several Toyota gimmicks, but more commonly known as a-trac
     
  19. Jun 21, 2016 at 11:30 AM
    #19
    16taco

    16taco Well-Known Member

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    Thanks, correction - i went over creek at both angles i forget wich one i heard the breaks kicking in on.
     
  20. Jun 21, 2016 at 1:01 PM
    #20
    2016/7544G

    2016/7544G Well-Known Member

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    I guess I am missing your point. The '16 Taco has electric brake boost as it comes. The application of wheel slip reduction whether in A-Trac or crawl control is "electronic brake boost". This is not a mod any third party vendor would take on as it would involve modification of factory braking system integrity and be a substantial liability risk for anyone involved in such a modification, thus the most sensible path to having these conveniences is to option your truck with them when buying.
    :cheers:
    PS: I like your avatar
     

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