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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

      Comment


      • #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]

        Comment


        • #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

          Comment


          • #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

            Comment


            • #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.

                Comment


                • #23
                  Kudos to amts and steve M and Willaide for sharing their knowledge here. Like grendizer, I have learn a lot about my prado from this old blog. I have an additional couple of questions

                  1/ will keeping a dff locked impact on the DAC on a descent. I am about to get a diff locker for the rear of my SWB 120 and am not sure if you keep it on for a steep downhill. As it is not going to be under power but under braking, do I turn it off before the descent?

                  2/ with an LSD in the front, it it worth getting a dff locker for the front and if I did does it replace the LSD so I would be fully open when the locker is not engaged. I like the idea of LSD for wet road conditions

                  Comment


                  • #24
                    A rear locker will actually improve down hill descents as the rear axle will (strangely enough!) be locked and not slip if a rear wheel is lifted. Suggest you try just the rear locker and not bother with DAC at all, except in all but the worst situation of perhaps a cambered descent.

                    Front diff doesn't have a LSD and whenever a locker is installed that diff stays open until the locker is engaged.
                    Cheers
                    Micheal.

                    2008 GXL D4D Auto. GOING... GOING... GONE
                    2015 GXL 1GD Auto. And it begins again...

                    Comment


                    • #25
                      Originally posted by 120D4D View Post
                      Front diff doesn't have a LSD and whenever a locker is installed that diff stays open until the locker is engaged.
                      I've got a japanese import 120 series 2004 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. Same spec it seems as what grendizer has. The user manual states LSD as an option. Not sure how to tell??

                      Comment

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