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2016 Prado Kakadu Rear Diff Lock

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  • 2016 Prado Kakadu Rear Diff Lock

    Has anyone removed their rear, electronically operated Diff Lock from their Toyota Prado (I have a 2016 Prado Kakadu 4L V6).
    Did any issues arise like warning signals or activation of limp home mode etc?
    I want to remove the standard Toyota rear diff lock (what a joke) and replace it with an ARB air locker like I have in the front diff which is excellent.
    ARB will supply the diff but will not do the installation as they are scared of any non -standard fitment of their gear.
    I have however sourced a local 4 x 4 mechanic who will install the ARB Air Locker in the rear and replace the electronic activation plate with a custom made seal.
    He asked if I could ask around to see if others recommend leaving the electronic activation solenoid installed or disconnect it, and what affects this might produce.
    Any advice or references would be appreciated.

    Regards and thanks.

    David
    pradokakadudavid
    Member
    Last edited by pradokakadudavid; 19-07-2016, 02:51 PM.

  • #2
    What's wrong with the rear diff lock?

    Comment


    • #3
      Admittedly i haven't had the need to use the rear diff lock on my 2016... hoping the vanilla version is ok for most things
      2.8L Kakadu (Chrystal Pearl). Extras - Snorkel, tow-bar, tint & bonnet protection. Wish list - Bash-plate, diff breather extension

      Comment


      • #4
        What's wrong with the Toyota rear diff lock? What isn't

        If you have ever used this Toyota rear diff lock offroad, you will know that you are only supposed to use it up to 8klms per hour, you have to stop to engage it, whilst in neutral, and then stop again to disengage it, whilst in neutral. This means in many cases that you have to be in trouble before using and then STOP, and engage it, and then stop again to disengage it when you may still need it.

        Also the switching is very temperamental and many Toyota drivers have also told me this. I often get stuck trying to turn it off and it will not cooperate so I end up with angry 4 wheel drivers behind me wondering why I have stopped when the switch will not stop flashing.

        I was whinging about this at the counter at ARB on the weekend and several other customers with similar rear diff locks joining in the complaining about the switching.

        Toyota mechanics have also admitted to me that this is a pain.

        The ARB (or similar) diff lock can be activated in high or low range and at far higher speeds and activated and disactivated on the run which is useful for 4 wheel driving.

        So I want to rip the useless piece of Toyota crap out and put something decent in however Toyota have told me today (while I was having a faulty TRC warning light fixed - which also disabled the Terrain Management System while I was 1,600 klms from home!) that if I did this it would disable all the connected ABS, TCR, MTS and other systems.

        So this electronic wizardry is all connected to frustrate the driver as most of it goes off anyway in Low range.

        I bought the Toyota over other models as I thought it would be reliable!!!!!

        I now wish I had bought a base GXL and optioned it up with decent 4 wheel drive accessories that work like they should when you need them.

        Not happy with this at all and will not rest until I get rid of it.

        Perhaps a GXL V8 Cruiser might be the way to go as at least I can get 12L / 100ks rather than the 20 L / 100 ks I was getting on the way up to Exmouth in the V6.

        Bring back the Lexus ISF groannnnnnnnnnnnnn

        Comment


        • #5
          Seems like you would have been better off with a VX...which is what I bought after the dealer told me himself that making any changes to the diff lock on the kakadu with an aftermarket one would disable other necessary features and will also affect warranty...and this was back in 2014.

          After telling the dealer my plans for what I intended to do with my prado, he did advise to definitely stay away from the kakadu and get either the VX or GXL.

          I suppose it helps to discuss any future plans you may have with your new vehicle so that the dealer can point you in the right direction. The hard part is trying to find the right dealer who knows what they're talking about to begin with!

          Comment


          • #6
            Why dont you test run it when disconnected and see if any fault codes/warning light come up?
            (pull the fuse and/or plug for the locker soleniod)
            Cheers
            Micheal.

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

            Comment


            • #7
              Yeah some good ideas above thanks guys. Re the VX instead of the Kakadu, this definitely would have been the way to go as it would have saved me 10 grand for gear which was mostly useless. Great thing hindsight. I do love the icebox lol, KDSS suspension and those automatically folder mirrors that do not automatically fold!!!!!! They can stick the MTMS as the diff locks are far better anyway. Re disconnecting the electronic solenoid to see what happens, this is what the 4 wheel drive shop where I was planning to buy it advised, however after much discussion, it seems like it will all be too much trouble as I think all this electronic trickery is a disaster waiting to happen.

              Regards

              David

              Comment


              • #8
                Useless Toyota rear diff lock

                God another fabulous day out in the dunes and challenging sand tracks but that bloody rear Toyota electronic diff lock sent me crazy again. Picture this. You are sitting in a one lane track with others behind you and you are trying to disengage the rear diff lock in anticipation of H4 and higher speeds. But .......bloody thing just would just not be turned off. I tried swerving from side to side, reversing, changing to H4 all to no avail. This is just a joke and obviously not designed or tested in the field. My mate in his Pajero was switching from H4 to L4 on the run and engaging his factory locker on the run. How could Toyota be so stupid to design this crap. I think I will just rip out the sensor and see what happens. All this electronic crap is rubbish anyway. Mind you I did love the fact that most people were struggling up a very holed, steep hill and spinning tyres in the air but with my KDSS and hence longer wheel travel the wheels never left the ground and the lockers kept me moving ...... until I had to turn the stupid rear one off. ARB air locker, excellent, Toyota diff damn stupid.

                Comment


                • #9
                  I think the Prado rear diff lock is the same as in the FJ cruiser. As i understand it it should be activated below 8 km/hr, but can operate at higher speeds. There is a hack for the FJ that allows the rear diff lock to be used in H4 and H2 (think long rooster trails in the sand!).

                  Only issue i have heard with them is one guy getting who had water in it (didnt have a breather fitted). Sometimes it can take a little while (10 secs) for it to disengage / engage - i tend to steer it a little.

                  Comment


                  • #10
                    I think the Prado rear diff lock is the same as in the FJ cruiser. As i understand it it should be activated below 8 km/hr, but can operate at higher speeds. There is a hack for the FJ that allows the rear diff lock to be used in H4 and H2 (think long rooster trails in the sand!).

                    Only issue i have heard with them is one guy getting who had water in it (didnt have a breather fitted). Sometimes it can take a little while (10 secs) for it to disengage / engage - i tend to steer it a little.

                    Comment


                    • #11
                      Dave, just curious if crawl control could have been used in any/some of the situations where you engaged the rear diff? I assume it is easier disengaged crawl than the rear diff?
                      2.8L Kakadu (Chrystal Pearl). Extras - Snorkel, tow-bar, tint & bonnet protection. Wish list - Bash-plate, diff breather extension

                      Comment


                      • #12
                        Originally posted by iDestiny View Post
                        Dave, just curious if crawl control could have been used in any/some of the situations where you engaged the rear diff? I assume it is easier disengaged crawl than the rear diff?
                        Hi.

                        Crawl control is useful for very low speed negotiation of downhill or very rough uphill tracks but I think you can achieve much better control yourself using your own speed and automatic gearing (without the bone jarring, earth shattering noises from the braking) I want to use the rear diff lock when negotiating high speed uphill sandhill ascents in really soft sand so the crawl control is useless here.

                        Interesting comment above re engaging at low speed but can drive at higher speeds as Toyota manual says must be stopped and in neutral to engage. Probably doesnt matter anyway as the damn thing rarely obeys my commands. .

                        Roll on the suspension upgrade on route from NSW.

                        Comment


                        • #13
                          Thats what my diff lock has been mostly used for - L4 on the limiter up sand dunes ;-)

                          I read the FJ manual. The first section says stop, put in neutral and engage L4. Try that. If still stuck, come to a halt, press the diff lock button, then apply the accelerator gently to roll the car (so it engages).

                          Checked - according to toyodiy, the part numbers for the FJ / P150 locking rear diff are consistent.

                          Originally posted by pradokakadudavid View Post
                          Hi.

                          I want to use the rear diff lock when negotiating high speed uphill sandhill ascents in really soft sand so the crawl control is useless here.

                          Interesting comment above re engaging at low speed but can drive at higher speeds as Toyota manual says must be stopped and in neutral to engage. Probably doesnt matter anyway as the damn thing rarely obeys my commands. .

                          Comment


                          • #14
                            Originally posted by pradokakadudavid View Post
                            But .......bloody thing just would just not be turned off. I tried swerving from side to side, reversing, changing to H4 all to no avail.
                            So how did you eventually get it unlocked, or is it still locked?

                            Also, when it was stuck locked, did that prevent you from successfully selecting high range or did it let you end up in high range with the rear diff still locked?

                            Comment


                            • #15
                              Originally posted by pradokakadudavid View Post
                              Also the switching is very temperamental and many Toyota drivers have also told me this. I often get stuck trying to turn it off and it will not cooperate so I end up with angry 4 wheel drivers behind me wondering why I have stopped when the switch will not stop flashing.
                              The most I have ever had to do to get the rear diff lock deactivated is to drive up the road 100m or so, have not had too many problems whilst using it.

                              Comment

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