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Engaging 4 wheel drive

Discussion in '5th Gen 4Runners (2010+)' started by Bert, Oct 11, 2020.

  1. Oct 11, 2020 at 10:50 AM
    #1
    Bert

    Bert [OP] New Member

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    Is normal driving proper in 4 h
     
  2. Oct 11, 2020 at 11:57 AM
    #2
    SlvrSlug

    SlvrSlug New Member

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    Welcome to the forum, what do you mean by normal.
     
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  3. Oct 11, 2020 at 12:25 PM
    #3
    kbp810

    kbp810 New Member

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    Not entirely sure what you’re asking... but you only want 4wd engaged when you need it, and when on a surface that would allow a wheel to slip.

    If you’re on pavement with 4wd engaged; you’re still okay if you’re going in a straight line; but if you were to go around a turn, you’ll now have two wheels being driven that are traveling at different speeds, and your driveline can bind. You’d probably hear the sound of a tire being dragged along and/or other unhappy sounds.
     
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  4. Oct 11, 2020 at 12:32 PM
    #4
    Snickel Fritz

    Snickel Fritz This member likes turtles.

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    Never, ever drive with four steering wheels at once. I did, and now I suffer from "bi-unidactyl conceptualized redundancy dis-reorder". It has dramatically impacted my ability to vogue at underground dance clubs, as I am now on forums all day typing nonsense... don't be like me.
     
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  5. Oct 11, 2020 at 12:58 PM
    #5
    Snickel Fritz

    Snickel Fritz This member likes turtles.

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    @Bert , sorry I was just being silly...
    I exercise my 4WD to lube the front diff and bearings whenever I have the chance, usually on dry asphalt.
    Slight curves are fine, if they weren't then 4WD would bind up on every real-world trail there is. I have even forgotten to switch back a couple of times (don't go 4WD in traffic), and was only reminded, gently, while descending a sharp "Y" turn that straddled a culvert. Mind you, my local asphalt is rough and silty, so my tires will slip just a hair anyway.

    Basically, as stated by kbp810... stay relatively straight, don't engage 4H any faster than 35, and be prepared to switch back at turns, or when traffic starts getting close (you don't want to make a fast lane change in 4H on a grippy road).
    Keep that diff lubed, for when you actually need it and you'll be golden.
     
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  6. Oct 11, 2020 at 1:24 PM
    #6
    SlvrSlug

    SlvrSlug New Member

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    I hate it when that happens.
     
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  7. Oct 12, 2020 at 2:48 AM
    #7
    Toy4X4

    Toy4X4 New Member

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    When we had our Tacoma(with the switch, no lever) the service dept. at the dealership said "make sure you switch it to 4lo once a month to keep the transfer case freed up." I had never heard of this before, but figured since I was new to Toyota again, maybe I should do it, so I did. Anybody else heard this? I know when we traded to our 4Runner one of the first things they did upon inspection was put the trans. in neutral and cycle the 4wd switch.
     
  8. Oct 12, 2020 at 4:55 AM
    #8
    scottalot

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    I try to cycle through high, low, and the locker in a regular basis.
     
  9. Oct 12, 2020 at 4:59 AM
    #9
    Thatbassguy

    Thatbassguy New member? Really??

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    If by normal driving you mean driving on dry, paved roads, then no. This will cause binding in the drivetrain when you turn.

    4wd should only be used in situations where you're losing traction in 2wd.

    I believe this is a good idea. It helps keep thing from seizing up. You can do this on pavement if you just go in a straight line. A driveway or parking lot is ideal.

    I would engage 4H, then drive forward a bit, then back. Then, shift to neutral and engage 4L and straight forward and back again. Then back to neutral and into 2H, and back and forth again.

    It's good for the transfer case, and entertaining for your neighbors to watch. :D
     
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  10. Nov 18, 2020 at 11:40 AM
    #10
    ImJimJo

    ImJimJo New Member

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    I have a 2020 4runner TRD off road premium and it seems that I have to be in 'park' to be able to shift to 4L. The H2 to H4 works fine but shouldn't I be able to go into 4L as long as I am not moving? ie: in drive or even in neutral?
     
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  11. Nov 18, 2020 at 11:54 AM
    #11
    Snickel Fritz

    Snickel Fritz This member likes turtles.

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    Welcome to the forum.
    Did you not receive the manual when you bought the 4R? 4L is for off-road use only, therefore you must be stopped, foot brake (not parking brake) engaged, and in neutral before shifting into 4L.
    Although not covered, I do suggest going from P to N, having the shift from P can make the transition smoother for some, not sure why... also, I allow mine to rest in 4H for a couple seconds before going into 4L, it also seems to engage better if I let it drive in 4H for a few feet before stopping, then going from P briefly into N, then going into 4L.
    Also, don't engage 4H over 35mph... you can drive faster if the roads are straight/slick enough, but your transfer case won't like you if it gets slammed into 4H at much faster than 35.
    Shift into 4H for a mile or so of straight, slow suburban streets every few days if possible, or for 10 miles once a month, to keep the 4WD system and front diff lubed up and corrosion free.
    Now get out and have some fun in it.
     
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  12. Nov 18, 2020 at 1:35 PM
    #12
    Big B

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    basically their telling you go drive your truck the way it was meant to be driven...in 4lo ;)
     
  13. Nov 18, 2020 at 1:35 PM
    #13
    Big B

    Big B New Member

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    my 20 goes into 4lo in N but never in D...your switching the transfer case.
     
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  14. Nov 18, 2020 at 2:29 PM
    #14
    MAXIM

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    Normal and proper
     
  15. Nov 18, 2020 at 5:11 PM
    #15
    ImJimJo

    ImJimJo New Member

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    Thank you for the responses. Yes, I did read the manual and it says you must be stopped. I took this to mean foot on the brake and no longer moving. It seems I have to be in park to shift to 4L. I will give your suggestions a try, Thanks Toy4x4 and Big B
     
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  16. Nov 18, 2020 at 5:41 PM
    #16
    Trail Runnah

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    I find in mine, the shift into 4L is much smoother if I'm slightly moving.

    I've already shifted into 4H, then I slow to 1-2mph, put the transmission in Neutral, then shift into 4low firmly but smoothly.

    I have the lever operated shifter though, not the electronic dial.
     
  17. Nov 18, 2020 at 6:03 PM
    #17
    jmkulbeth

    jmkulbeth New Member

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    The reason you need to be in neutral or park (or barely moving) when shifting into 4Lo is because of the automatic transmission. When in Drive the transmission is engaged and is driving the wheels. When you come to a complete stop in Drive the brakes stop the wheels, which in turn stop movement in the transmission, but the engine is still spinning the torque converter. As long as you hold the brake while in Drive the transmission is stationary... But the torque converter is still trying to spin the transmission.

    Now if you keep the transmission in Drive and then slide the transfer case into Neutral there's nothing holding the transmission still anymore. When the transfer case is in neutral you have now decoupled the transmission from the rest of the drive line, so even with the wheels braked the transmission is now free to spin since the torque converter is always spinning. Since you have to go through the transfer case Neutral to get 4lo, leaving the transmission in Drive means the transmission is moving during the shift to lo. Because of the gearing difference between hi and lo, trying to engage 4lo while in Drive means your going to grind gears.

    Hopefully that makes since. It's easier to visualize than to explain. Regardless, park/neutral/barely moving work but anything else will grind going into 4lo.
     
    Last edited: Nov 18, 2020
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  18. Nov 19, 2020 at 8:52 AM
    #18
    ImJimJo

    ImJimJo New Member

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    Thank you jmkulbeth. I was able to visualize what you had explained. the manual could be written better. I had tried being completely stopped in neutral and could not shift without grinding. I just turned the engine off in able to shift out of 4L. I will try thr slightly moving method to see if that helps.
     
  19. Nov 19, 2020 at 9:31 AM
    #19
    jmkulbeth

    jmkulbeth New Member

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    ImJimJo -- glad that helped. The manual tells you 'what' to do, but I think they could written a little bit about the 'why' aspect to bring the reasons around full circle.

    For what it's worth, I've not owned a vehicle with part-time 4WD that didn't grind a little going into 4Lo. My last Jeep (2004 Unlimited with a 5 speed auto) made it to 237k miles and it would grind a little every time going into Lo. Sometimes more than others, and rarely never at all.

    Before shifting into 4Lo you can try shifting into Park, or shift the transmission into Neutral and then wait 5 or 6 beats for everything to stop spinning or at least slow down. Also, when you shift into 4Lo, do it with conviction -- don't hesitate, don't linger. You don't have to ram it into 4Lo, but don't ginger it either... like shaking hands with a firm grip. After some usage things should loosen up a bit and it'll do it less often. My 2020 ORP does it. But not nearly as much as it did the first time I used it.

    If you do it while moving, you still want to have the transmission in Neutral. And you need to be barely moving... slower than you walk... like, almost not registering on the speedometer.

    Good luck!
     

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