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Centre Diff Lock vs Rear Diff Lock

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  • #16
    Ok got that, thanks williade. Oh by the way SteveM my 120 doesn't have a button to activate the centre diff lock it has the lever and no traction control (04 model). Thanks again - got it sorted now! Paul.

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    • #17
      Yeah realized yours didnt have it Paul. If you had traction control it would have pulled/pushed you through no worries. Myn is an 05 (would be the same as yours I presume) so no traction control. Not sure it was even an option on yours and mine at the time ?? I may be wrong but I think that option come in around 06/07 when the D4D was introduced, even on the GX you can get traction/down hill assist, climate duel air.........Cheers Steve
      Face lift 150 Prado V6 auto. No mods yet

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      • #18
        For the sake of those who don't frequent the trip reports sub forum:

        Here is a demonstration of my rear locker at Newnes. Notice that, without the locker engaged, traction is lost before any wheels are airborne.

        [B]Declan[/B]: [SIZE=1]1997 GXL 4.5 Auto 80 series on [B][COLOR="#FF0000"]LPG[/COLOR][/B], ARB bullbar, 2" OME lift, 32" MTZ, GME UHF, rear ARB locker, Kaymar spare wheel carrier[/SIZE]
        [B]PLANNED[/B]: [SIZE=1]3 or 4" suspension lift, 2" body lift (maybe), winch, 35" MTZ + roadies, front locker, sliders, cylinder head rebuilt for [B][COLOR="#FF0000"]LPG[/COLOR][/B], Garret [COLOR="#4499ff"][B]Turbocharger[/B][/COLOR][/SIZE]

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        • #19
          Hello folks

          Digging a 6 year old thread as I cudnt get a satisfactory answer to my queries. The more I read, the more I learn, and the more confused I get

          I got a UK import 120 series 2003 model D4D engine, auto tranny prado. It has Center diff lock button and DAC button and on t-case lever it shows L-N-H.

          1. I am guessing these 120 series come with LSD ..... is it correct?

          2. What happens if I shift the t-case lever to H while center diff lock is NOT engaged? How the power is distributed between the front and rear axles?

          3. This should be the first question ..... can I use H or L on t-case WITHOUT center diff button engaged?

          4. How to use DAC? Scenario: I am about to go down on a steep descend. I engage DAC, shift to D and only control the steering wheel while NO FOOT ON ANY PEDALS? Do I need to shift to L to use DAC? Whats the diiference if I select L on t-case and engage DAC and go downhill?

          5. Can I shift from H-N-L on the fly (where speed is less than 10km/h) I heard shifting from L to H while moving is not a problem but do I have to COMPLETELY STOP before shifting from L-H?

          6. Engaging and disengaging center diff lock button should be done while the vehicle is stationary or can it be done while its moving?

          I had 70 series with old school manual tranny/manual hubs locks/ rear lockers and I could control is the way I wanted but with these electronic gadgets life has become easy but fun has lost.

          I would appreciate your comments / replies as enough of me learning by breaking things up. Better to have experts' opinions and advice.

          Cheers

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          • #20
            Originally posted by Grendizer View Post
            Hello folks

            Digging a 6 year old thread as I cudnt get a satisfactory answer to my queries. The more I read, the more I learn, and the more confused I get

            I got a UK import 120 series 2003 model D4D engine, auto tranny prado. It has Center diff lock button and DAC button and on t-case lever it shows L-N-H.
            1. I am guessing these 120 series come with LSD ..... is it correct?
            For your model, just the front.

            2. What happens if I shift the t-case lever to H while center diff lock is NOT engaged? How the power is distributed between the front and rear axles?
            It means that the power distribution isn't locked front and rear.

            3. This should be the first question ..... can I use H or L on t-case WITHOUT center diff button engaged?
            Yes

            4. How to use DAC? Scenario: I am about to go down on a steep descend. I engage DAC, shift to D and only control the steering wheel while NO FOOT ON ANY PEDALS? Do I need to shift to L to use DAC? Whats the diiference if I select L on t-case and engage DAC and go downhill?
            In low range, 1st gear

            5. Can I shift from H-N-L on the fly (where speed is less than 10km/h) I heard shifting from L to H while moving is not a problem but do I have to COMPLETELY STOP before shifting from L-H?
            I shift at complete stop, both ways.

            6. Engaging and disengaging center diff lock button should be done while the vehicle is stationary or can it be done while its moving?
            While moving

            I had 70 series with old school manual tranny/manual hubs locks/ rear lockers and I could control is the way I wanted but with these electronic gadgets life has become easy but fun has lost.

            I would appreciate your comments / replies as enough of me learning by breaking things up. Better to have experts' opinions and advice.

            Cheers
            If you have experienced D4D engine failure, please complete this survey ​http://goo.gl/forms/bpJSYjq0Zx
            My Rig Build up

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            • #21
              thanks @amts

              really appreciate your reply.

              Educate me more plz ...... can you differentiate between the followings two:

              1. Using L on t-case with center diff button NOT engaged
              2. Using L on t-case with center diff button engaged

              whats the actual power ratio distribution when center diff button is engaged and not engaged?

              Confusion is that some people say you dont really need to activate center diff unless needed, I cant get any logic outta this.

              Cheers

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              • #22
                Centre diff engaged will lock power 50:50. It should only be engaged on loose surfaces.
                If you have experienced D4D engine failure, please complete this survey ​http://goo.gl/forms/bpJSYjq0Zx
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