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Why doesn't my Tundra have overdrive?

Discussion in '2nd Gen Tundras (2007-2013)' started by dbeans1, Jun 15, 2016.

  1. Jun 15, 2016 at 6:22 PM
    #1
    dbeans1

    dbeans1 [OP] New Member

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    Hello guys, im a newbie. My question is: why doesn't my tundra have overdrive? Is it because i have a 6 speed in my 2014 4.6 l tundra?
     
  2. Jun 15, 2016 at 6:40 PM
    #2
    ColoradoTJ

    ColoradoTJ So there I was.... Staff Member

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    You have a double overdrive. 4th gear is 1:1 ratio.

    Welcome to the site.
     
  3. Jun 16, 2016 at 10:21 AM
    #3
    Nor7

    Nor7 Chilton Manual Guy

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    You should have a Tow/Haul button, same thing essentially.
     
  4. Jun 16, 2016 at 12:18 PM
    #4
    jberry813

    jberry813 The Mad Scientist Staff Member

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    Tow haul changes the shift points and increases throttle pedal responsiveness. It has nothing to do with overdrive.
     
  5. Jun 16, 2016 at 1:05 PM
    #5
    Nor7

    Nor7 Chilton Manual Guy

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    Well you're partially right. Years ago since the average driver didn't understand overdrive the automakers started using Tow/Haul instead of overdrive. Kinda backwards from what it used to be. My point is that since there's a Tow/Haul mode that means there is an overdrive.
     
  6. Jun 16, 2016 at 2:51 PM
    #6
    jberry813

    jberry813 The Mad Scientist Staff Member

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  7. Jun 16, 2016 at 3:12 PM
    #7
    RockLbstr2011

    RockLbstr2011 New Member

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    Sorry to thread jack but is this for real. Do people really give a flying shit about gas mileage? It is a full size truck.
     
    JAMES, Black Wolf and T-Rex266 like this.
  8. Jun 16, 2016 at 3:27 PM
    #8
    Nor7

    Nor7 Chilton Manual Guy

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    Ok. The long explanation. Overdrive used to be a separate box on the back of the gearbox that you had to engage or turn on. Then it became an automatic feature that you had to turn off when you were towing so the higher gears wouldn't wear out. Now the 'overdrive off' button has become the Tow/Haul button and extra features like shift point adjustments were added to larger vehicles like trucks for better towing performance. Technically overdrive no longer exists in modern day transmissions but the Tow/Haul mode is the modern day equivalent of turning it off.
     
    RockLbstr2011 likes this.
  9. Jun 16, 2016 at 3:34 PM
    #9
    Nor7

    Nor7 Chilton Manual Guy

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    Yeah good point. Nobody really buys a full size truck for its fuel efficiency.
     
    RockLbstr2011 likes this.
  10. Jun 16, 2016 at 8:29 PM
    #10
    Wynnded

    Wynnded What MPG...

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    Uhhhh....okay?
     
    jberry813 likes this.

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