Originally posted by JohnLynn
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DPF and white smoke
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Thanks for posting, yes as you say the delta pressure is subject to a lot of variables, engine speed, load etc but after monitoring it in torque pro you can see the average rise and fall before and after a regen. Presumably as they already use this method on other vehicles it shouldn't be too hard to introduce it to the 2.8. Being a cynical type I must admit that I raised my eyebrows reading that they developed this algorithm method to extend the life of the DPF but they have now decided that it will be OK anyway??? One other thing that doesn't seem to be addressed in your email from them is the 5th injector. Apart from saying this will no longer keep injecting fuel if the "conditions are not met" (I guess they mean the DPF getting hot enough?) there is no mention of it getting carboned up and needing cleaning frequently.
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Looks like the main stream media are beginning to pick this up - I'm sure Toyota aren't happy about getitng this sort of coverage! Only name Hilux, but given time I'm sure the issues with Prados and Fortunas will also get mentioned if not resolved.
https://www.news.com.au/technology/i...48954b3b51e234
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Anyone know how long the DPF change out procedure should take?
My 2016 2.8 50,000km went in for DPF check Wednesday, did three manual burns and it didn't clear so ordered a replacement DPF for Thursday morning. Job not finished yet (Friday midday), apparently because of after-market modficiation, which I presume is my second battery with Piranha tray.
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Originally posted by beatit99 View PostAnyone know how long the DPF change out procedure should take?
My 2016 2.8 50,000km went in for DPF check Wednesday, did three manual burns and it didn't clear so ordered a replacement DPF for Thursday morning. Job not finished yet (Friday midday), apparently because of after-market modficiation, which I presume is my second battery with Piranha tray.2018 VX Prado
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Called my dealer last week and booked mine in for the ECU upgrade and also asked about a manual DPF burn button:
"Yes, that’s correct, we started going the recalibrations about a fortnight ago. It’s more involved than simply loading the new calibration on, we have to inspect the condition of the filter itself to determine if it requires replacing, as there’s no point putting the new calibration on if the filter is no good. It’s best to leave the car with us for half a day as it can take up to two hours just to check and obviously longer if it requires a replacement.
There is some trialling of an install of a manual DPF regen button for Hiluxes but not for Prados and it has to satisfy very strict guidelines for its installation and nor is it an easy install. Parts are on sales stop until data is provided, so it’s not something I can order. It’s basically meant for mining vehicles that never leave the site/underground and never get up to highway speeds and doesn’t affect DPF regeneration when the vehicle is operating at highway speeds."
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I have no way of testing the difference - while I can see the differential pressure across the DPF, it is so variable based on speed, power etc I can't see if these is a difference post it being in the shop and the 2 burns. I have asked the service manager why they had to do two regens, Will post if I get a reply.
Only thing I will be able to tell is if the regen temps at 110 kph are high enough and how long a regen takes. That probably won't be till end August when I have a long trip planned.
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Asked my service manager about the 2 DPF burns:
"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 it’s different by +/- 20 degrees, that one goes in the bin and it gets a new one put on. If it’s clogged, we do another two, one to clean and another one to judge the condition after a second clean. Being recently replaced, the difference in your vehicle was three degrees after the first test, so she’s all happy inside there. Hopefully no more issues and better fuel consumption too!"
Note I haven't had my DPF replaced, he got me confused with someone else's car. But looks like mine is OK and the regens have been working (I'm currently at 30,000 km and a lot of that is highway kms). Also interesting they measure temp and not DPF differential pressure (or maybe they measure both and he just didn't mention it)
Must admit overall I've been impressed by the service/response I have been getting - I think Toyota have been playing it quite up till now, much to the frustration of both the service people and we in the public after info. Hopefully they will be more open going forward. And the new code has it sorted.
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14 months and 38,000km later, Prado blowing white smoke due to a blocked DPF. No reasonable person expects a new vehicle to be in a workshop for days at a time to remedy multiple faults. I've lost days on the road due to vehicle issues and lack of support.
I've lost all faith in this brand, never again.
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Originally posted by Micko2005 View PostI share your pain, it almost seems a case of it's not 'if" but "when" the DPF will fail. It will be interesting if they put a manual burn button into your car.
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