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  • My Prado has been blowing white smoke and has been in to CMI Toyota Christies Beach, SA. They are still doing manual burns cleaned the injector in the DPF as this is the new fix from Toyota and keep coming back with the DPF is not clogged. it is a 2015 model with 90,000 km on it I have had it since new and do at least 50 km every time I start is up.

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    • Have they done the ECU update which is supposed to make the burn hotter and shorter and prevent these issues?

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      • My 2018 GXL didn't blow white smoke but I had the DPF full message on most of the way from Port Hedland to Mt Isa (3400 km). After a couple of burns at dealers, the message kept returning. I called at the third dealer in Mt Isa and they seem to have fixed the problem by cleaning the 5th injector as well as doing a burn.
        Since returning home to Sydney, my dealer has done another burn and done the ECU update. I haven't had the DPF full message since Mt Isa. Since the ECU update, I seem to be getting over 1500km to a tankfull of diesel rather than about 1300km - not sure if just coincidence that my driving pattern has been different.

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        • Originally posted by JohnLynn View Post
          Have they done the ECU update which is supposed to make the burn hotter and shorter and prevent these issues?
          John the ECU update wasnít the panacea they hoped for. I had it done but still ended up with the white smoke issue. Itís now been back a second time and I was told Toyota wonít consider a DPF replacement until youíve been back at least four times. I did point out that doing the same thing and expecting a different result was a sign of insanity however they assure me that each time they give the ECU a little ďtweakĒ. The smoke is something to behold but the funny thing is I have never had the DPF light come on.

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          • I think the light only comes on when the DPF is 170% full ?

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            • My take on the situation is there are two different things at play here.

              One issue is DPF blockage. The DPF is like a large bunch of straws, and relies on heat and exhaust flow to clear the accumulated particulates. Once a straw is blocked, it dies not get exhaust flow and will most likely stay blocked. As the DPF gets blocked, the delta pressure goes up as there are fewer and and fewer straws to flow down. The warning light is based on dP - from what I have read at 120% of the set point (ie the max of the normal range of dP the DPF expects to see) the warning light comes on, at 170% the limp home mode kicks in.

              The other issue reported is if the injector port gets blocked - in which case the fuel does not atomise properly, does not combust to create heat and comes out as "white smoke".

              The two issues are inter-related, but also could also be independent. For example, even with the injector port working properly the DPF may become blocked because of the ECU algorithm and your driving style, so you get limp home mode without white smoke. Alternatively, the port may get blocked so you blow white smoke but your DPF is not blocked - though I would expect the DPF would not last long in this situation.

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              • great explanation and certainly makes sense , thanks

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                • Originally posted by nudgebar View Post
                  great explanation and certainly makes sense , thanks
                  Yes I often wonder if some customers have a better grasp of the issue than Toyota staff.
                  Faulco Have they cleaned your 5th injector? (sorry if you have told us and I have missed it) as possibly the ECU update wouldn't make any difference to the state of the injector if it was already covered in carbon and soot before they did the update?

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                  • John the first time they did a forced regen and put some ďcleanerĒ through the DPF. The second time they didnít exactly say but it was in and out in less than 3 hours (I elected to wait because of the distance to home) so Iím guessing it was more of the same. I did check under the bonnet and the injector housing appeared undistirbed. Problem is the guy who I talk to at the reception area is not the guy who works on the car and is not a mechanic. If the problem is a dirty injector I imagine Iíll be back for round 3 in the not too distant future.

                    Thanks LeadWings, thatís pretty much how I thought it worked.

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                    • Ha, I had a Toyota tech try and advise me that the DPF wonít burn until over 60km/hr.

                      If this was true, how come there arenít more Town Prado parked up on the curb with issues?
                      Ive seen a burn happen whilst driving around town, well under the 60km/hr limit so clearly the Toyota techs donít know what they are pushing down the throat of some customers.

                      They would have a story to try and sell to the customers to look like the problem is the caused from customer driving habits, and not a design flaw

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                      • Originally posted by Faulco View Post
                        John the first time they did a forced regen and put some ďcleanerĒ through the DPF. The second time they didnít exactly say but it was in and out in less than 3 hours (I elected to wait because of the distance to home).
                        My local service guy is pretty good, and as frustrated as we are at how Toyota are handling this and what info they are sharing. When I took my car in for the latest ECU upgrade, I noticed the form said 2 regens had been run, and I asked why. His response was:

                        "Two is standard practice, the first one is a manual regeneration with cleaner, and the second is an forced auto regeneration to simulate on-road driving and the second one is where we measure the difference in temperature sensors to judge the condition of the catalyst. If itís different by +/- 20 degrees, that one goes in the bin and it gets a new one put on. If itís clogged, we do another two, one to clean and another one to judge the condition after a second clean."

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                        • Originally posted by orangepeel View Post
                          Ha, I had a Toyota tech try and advise me that the DPF wonít burn until over 60km/hr.

                          If this was true, how come there arenít more Town Prado parked up on the curb with issues?
                          Ive seen a burn happen whilst driving around town, well under the 60km/hr limit so clearly the Toyota techs donít know what they are pushing down the throat of some customers.

                          They would have a story to try and sell to the customers to look like the problem is the caused from customer driving habits, and not a design flaw
                          I have driven in city traffic many times (2018 Prado), tops 40Km/hr, during a complete DPF burn.
                          And recently drove a track at 25-30Km/hr in 4Lo when a DPF Burn occured. It took 8Km to complete.

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                          • Not sure if anyone has seen this and how relevant it is (I'm still driving a 90 series), but it shows how to clean the 5th injector. I guess warranty would be an issue for a lot of owners.

                            https://www.youtube.com/watch?v=OdZACWORMMg

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                            • good find. yes its relevant , but i wouldnt be touching anything while under warranty. Its Toyotas problem first and foremost , they have to fixit.

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                              • Given this has shown to be an issue in so many vehicles so young, I would be pushing Toyota to repair even out of warranty (up to say 100,000 km?). A lot of palava, but there could easily be a group action over this.

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