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Old 10-28-2011, 01:07 PM   #1
aqua33
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Default Center Dif Lock

I just starting looking at the 5th gens as my next purchase. I love the fact they finally went back to the manual transfer case. I did not see the center diff lock in any pictures I found or that it was listed in the specs. Is it still there and if not what did Toyota replace it with.?

Thanks.
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Old 10-28-2011, 01:14 PM   #2
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Only the 5th Gen Limited has a full-time transfer case (all of the 4th Gens had a full-time transfer case, with the V6 having the option of going into 2wd as well) requiring the center diff-lock like the 4th Gen. The SR5 and Trail both have part time transfer cases, and when you engage 4WD on the SR5 or Trail, it's the same as engaging the center diff lock on a 4th Gen.
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Old 10-28-2011, 04:16 PM   #3
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As above the SR5 & TE does not have a center diff anymore, probably to reduce cost a bit.

I really wish they kept the 4th Gen V6 transfer case with all the options, as it is most flexible.
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Old 11-02-2011, 07:01 AM   #4
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The reason I am after a manual transfer case is that my actuators are shot (front and center) and instead of repairing them I am seriously considering selling my 03 and buying a 2010 SR5 or a 05-07 TLC. Comparing the 4th and 5th gen, are you saying the 4th gen has a better transfer case? Is the TC in the 5th gen just like the FJ TC?
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Old 11-02-2011, 08:45 AM   #5
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If you opted for the 2010+ model with the manual Transfer case, SR5 or Trail, You'll still have an actuator up in the front diff. The Limited will be just like the 4th gen, dial control and full-time 4x4 with the TC Center Diff. In fact the Limited 4x4 is a full-time 4x4 just like the 4th gen V8 4x4's.

In my 2010 Trail, It was nice having the Manual Transfer Case, but the computer still relies on the I/O from the front actuator and all the other 4x4 electronic gizmos before actually sending power to all 4 wheels.
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Old 11-02-2011, 08:52 AM   #6
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Quote:
Originally Posted by aqua33 View Post
The reason I am after a manual transfer case is that my actuators are shot (front and center) and instead of repairing them I am seriously considering selling my 03 and buying a 2010 SR5 or a 05-07 TLC. Comparing the 4th and 5th gen, are you saying the 4th gen has a better transfer case? Is the TC in the 5th gen just like the FJ TC?
I think what he's saying is that the 4th gen transfer case gave you more options. On a V6 4th Gen, you can have 2wd, 4Hi with center diff, 4Lo with center diff, 4hi center locked, 4Lo center locked.

on the V8 you have 4Hi with center diff, 4Lo with center diff, 4hi center locked, 4Lo center locked.

With the 5th gen Sr5 or Tail you have 2wd, 4Hi center locked, 4Lo center locked.

5th Gen Limited you have 4Hi with center diff, 4Hi center locked, and 4Lo center locked (if I remember on the 5th Gen you can't go into 4Lo without the center being locked, but I could be wrong).

The FJ Automatic is similar to the SR5 and Trail 4Runner, and the FJ with 6spd is similar to the 5th gen Limited.
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Old 12-03-2011, 08:46 AM   #7
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Quote:
Originally Posted by bulldog View Post
As above the SR5 & TE does not have a center diff anymore, probably to reduce cost a bit.

I really wish they kept the 4th Gen V6 transfer case with all the options, as it is most flexible.
Will you go into more detail?

I went and drove the 5th gen SR5 last night. While on the test drive I pulled into a parking lot to show my wife that she would need to stop, be in neutral and move the lever into the 4H position when poor weather strikes. Having not read up enough on the 5th gen I soon realized the center diff was locked (tires chirping on tight turn out of the parking lot) so.... Does this mean our V6 4th gen is better for driving around town with rain/snow then the 5 th gen?

Is there any advantage to the newly designed 5th gen 4x4 setup? From what I can tell our 2005 is better for our needs. On the fly 4H and open center diff seems just what we need as we use 4H frequently in the winter months even on mostly dry roads.

Tia, Jason
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Old 12-03-2011, 09:12 AM   #8
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.....

Last edited by shuly; 05-26-2012 at 09:38 PM.
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Old 12-03-2011, 01:48 PM   #9
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Originally Posted by shuly View Post
Whatever you use .... they both will work fine in the rain/snow. And no matter what you get...the 4WD will help you keep from spinning out of control on a freeway...but no amount of 4WD toys will add to your ability to stop any better than a 2WD runner.

If you mean slowing down with the brakes that is .... 4WD downshifting using engine braking is the most effective method for slowing down on slippery surfaces if you get yourself in trouble (like wow does it work well in the snow!), but I'm sure most of us here know that as we're not a bunch of grocery getting girls

Just being an automotive tech Nazi don't mind me
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Old 12-03-2011, 06:58 PM   #10
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Old 12-03-2011, 08:04 PM   #11
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Engine brake??? I thought the engine was to make you go not stop
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Old 01-03-2012, 01:47 PM   #12
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Amen & Amen

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Old 10-07-2012, 12:30 AM   #13
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Quote:
Originally Posted by jason04 View Post
Will you go into more detail?

I went and drove the 5th gen SR5 last night. While on the test drive I pulled into a parking lot to show my wife that she would need to stop, be in neutral and move the lever into the 4H position when poor weather strikes...

Is there any advantage to the newly designed 5th gen 4x4 setup? From what I can tell our 2005 is better for our needs. On the fly 4H and open center diff seems just what we need as we use 4H frequently in the winter months even on mostly dry roads.

Tia, Jason
My '12 SR5 is shift-on-the-fly between 2WD and 4HI. Absence of a center diff doesn't prevent this. Stopped and neutral is recommended for shifting between 4HI and 4LO.

Advantages of this t-case are probably matters of opinion and intended use. I say it's a simpler machine than a t-case with a center diff, therefore presumably cheaper to manufacture, lighter weight, more reliable. After all, no center diff means no center diff to wear out or break. To me, these are all advantages.

The trade off is no full time 4WD mode. How important is full time 4WD? Depends on the user and the application, I think. I had a full time/part time t-case on a Jeep Grand Cherokee, and I used the full time mode a lot 'cause it's kind of set-and-forget for driving in mixed or changing conditions.

I find I dont miss that full time feature much on the SR5. The traction control and VSC seem to do a great job of maximizing this vehicle's capabilities in 2WD, and so when its slippery enough that I want 4WD, then it's slippery enough for 4HI part time.

You just need to remember to throw it back in 2WD when you reach dry pavement, that's all.
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Old 11-13-2012, 05:24 PM   #14
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I prefer the Limited's full time 4wd as like the previous poster said, its kind of a set it and forget it. Where it really shines is accelerating from a stop while making a turn on wet roads. Every other vehicle I drive, be it FWD or RWD will inevitably spin the inside tire if I need to make it out in a hurry. No matter what I do with the 4-Runner, it just wont break loose and getting out and up to speed is the same as on dry pavement. I also have found it actually handles better in snow leaving the center unlocked for most driving conditions. Only time I need to lock it is when climbing a steep slick hill. If I lock the differential on snow covered roads and try to make turns, the front end tends to break loose and I lose steering.
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Old 11-12-2013, 10:33 AM   #15
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5th gen SR5 does not have center diff locks like the 4th gens. My 2011 has 2wd, 4hi, 4lo, a-trac. No diff locks unless you add ARB lockers to it.


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Old 11-13-2013, 02:27 PM   #16
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Default Set of Toyota training video explaining all of the Toyoya 4WD systems

I know they are long and start off with the basics but this should answer all of your questions....


The following three video clips explain the uses, function, operation and theory of all of the 2014 Toyota 4WD systems. It starts at a very basic level and is a great primer for people new to 4x4 vehicles. The videos also demonstrate the advanced functions and impressive technology used in Toyota vehicles 4x4 systems.

Part 1

Basic overview
Full time vs Part time 4wd systems
Torque and traction
Transfer cases
4wd mode selection
High/low range
Differentials
open
limited slip
locking
electronic limited slip (ALS)
Hill assist (HAC)
Downhill assist (DAC)
Crawl control
Multi-terrain ABS


www.youtube.com/embed/r3gqKsb_Nck


Part 2

Electronic control rear differential
Multi terrain select
KDSS
Shifting “on the fly”
Drive-train binding
Operation speeds
3 types of “fulltime 4wd”
Center differential
Locking center differential
Torsen differentials
Multi mode 4wd
Full time AWD
Electronic on-demand 4wd systems
Electromagnetic couplers

www.youtube.com/embed/4axqPSJyjPw

Part 3

4wd ECU
Dynamic AWD systems
Electromagnetic couplers
Electromotor generators
Rear differential motors

www.youtube.com/embed/KO5hp82BQy0

DICLAIMER: the video clips are compilations of animations used in training of Toyota employees and representatives. The original content (animations) are property of Toyota Motor Company. The clips are compiled for informational purposes and the enjoyment of Toyota off-road enthusiast. Any other use of the source material should be done with the authorization of Toyota.
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Old 11-14-2013, 07:39 AM   #17
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Quote:
Originally Posted by TXYOTAFAN View Post
5th gen SR5 does not have center diff locks like the 4th gens. My 2011 has 2wd, 4hi, 4lo, a-trac. No diff locks unless you add ARB lockers to it.
What you say is true: there is no center diff lock on the SR5. But your reference to ARB axle lockers makes me want to clarify my point, which was about the transfer case, not the axles.

The 5th Gen SR5 4Runner has no center differential lock because it doesn't need one: there is no differential in the transfer case, so nothing there that needs locking.

The transfer case in the 5th Gen T4R is the Aisin VF2A, which is a "part time" case. In 4WD mode (hi or lo), this transfer case behaves like a locked case, turning the front and rear driveshafts at the same rate under all conditions.
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Old 11-14-2013, 10:11 AM   #18
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Good to know. I'm coming from a 97LX450 ( Lexus version of landcruiser) which had center, front and rear lockers. So you could run with an open or locked center depending on the situation/need. My brother has a 2006 4th gen sport which has center diff lock, so I just wanted to clarify on mine there is no option to run open or locked in 4wd mode as you could on some models.


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Old 12-27-2013, 07:07 PM   #19
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What I'm getting from all this is that we need to be sure to switch back to 2WD after off-roading in our '14 SR5 4Runner. Our '05 is also an SR5 4wd. Do either have ATRAC, and if so when should it be used and which symbol signifies it's control button or knob?
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