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Hill descent control - how to use?

Discussion in '3rd Gen. Tacomas (2016-2023)' started by Gutt Pile, Dec 30, 2015.

  1. Dec 30, 2015 at 8:30 AM
    #1
    Gutt Pile

    Gutt Pile [OP] Well-Known Member

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    Can't find any mention of it in the manual. I have noticed that on occasion when going down hill the taco will automatically engine brake. There doesn't seem to be any rhyme or reason to when it decides to do this and on really steep hills where it would be useful I can't figure out how to engage it.
     
  2. Dec 30, 2015 at 8:31 AM
    #2
    kashtyaatsi

    kashtyaatsi DieselDub

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    It probably downshifts because you have cruise control on.
     
  3. Dec 30, 2015 at 8:32 AM
    #3
    Gutt Pile

    Gutt Pile [OP] Well-Known Member

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    Have yet to even use cruise control. Have only put about 1K miles on her so far.
     
  4. Dec 30, 2015 at 8:35 AM
    #4
    kashtyaatsi

    kashtyaatsi DieselDub

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    That's the only time I've noticed it downshift going down a hill. You are talking about on the street right?
     
  5. Dec 30, 2015 at 8:36 AM
    #5
    Gutt Pile

    Gutt Pile [OP] Well-Known Member

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    yes
     
  6. Dec 30, 2015 at 8:53 AM
    #6
    J-Rock

    J-Rock Well-Known Member

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    um, step -1, shift into 4Lo
    Step 0 enable crawl control

    then follow instructions above...
     
  7. Dec 30, 2015 at 8:57 AM
    #7
    GLGAR

    GLGAR Member

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    Mine does it too at highway speeds, not in cruise control and I don't have crawl control.
     
  8. Dec 30, 2015 at 8:57 AM
    #8
    Gutt Pile

    Gutt Pile [OP] Well-Known Member

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    So when it engine breaks on a hill in 2wd Its just the transmission doing it "because" and the only way to do it on demand is to put it in 4lo and crawl?
     
  9. Dec 30, 2015 at 9:00 AM
    #9
    Gutt Pile

    Gutt Pile [OP] Well-Known Member

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    At highway speeds? I guess I can't count to potato? Didn't think that was a good idea at 50PMH.
     
    Last edited: Dec 30, 2015
  10. Dec 30, 2015 at 9:02 AM
    #10
    Gutt Pile

    Gutt Pile [OP] Well-Known Member

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    Sitting here w the manual. What page does it mention hill descent control in 2Wd at speeds over 40MPH? I can read too!
     
  11. Dec 30, 2015 at 9:03 AM
    #11
    Gutt Pile

    Gutt Pile [OP] Well-Known Member

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    Assuming what I'm experiencing is just engine breaking would be nice to figure out how to engage it on demand without throwing my car into 4Lo at highway speeds and destroying some really expensive shit.
     
  12. Dec 30, 2015 at 9:04 AM
    #12
    Gutt Pile

    Gutt Pile [OP] Well-Known Member

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    Will have to play w sport shifting mode I guess to see if I can trick the unpredictable tranny into doing it.
     
  13. Dec 30, 2015 at 9:06 AM
    #13
    uurx

    uurx Well-Known Member

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    If the automatic tranny downshifts going down hill maybe by itself maybe it is because the op has his or her foot on the brake pedal and slowed the car down enough for the tranny ecu to think time for a different gear??
     
  14. Dec 30, 2015 at 9:07 AM
    #14
    Gutt Pile

    Gutt Pile [OP] Well-Known Member

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    I've had it do it while the car is accelerating from gravity w no feet on anything.
     
  15. Dec 30, 2015 at 9:07 AM
    #15
    mbarbay

    mbarbay Well-Known Member

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    you could switch to shift mode and shift to lower gear to engine brake
     
  16. Dec 30, 2015 at 9:09 AM
    #16
    uurx

    uurx Well-Known Member

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