DPF and white smoke

[JohnLynn]

Thanks for posting, do you know when the recall was issued and could you take a photo of it? I ask because as I posted in the DPF switch thread my Prado has it's final capped service next Wednesday and the dealer said when I asked about an update that there isn't one.

[bing10]

for those that havent recieved a letter, Toyota have issued a service recall for prado, foretune and hilux involving a reflash and inspection of the DPF .

Gee they were a bit slow to the party

[vxowner18]

I was going to see if I could log some useful info this morning, unfortunately, I didn't know I had to touch that damn little PLAY button to use logging function...

Sadly I picked up another instance of the "recalculation" from a cold start. The DPF% started from 76%, dropped to 58% at the time I drove off Highway, and ended at 62% before engine was turned off. Max exhaust temp was 418c. Total km travelled was 43km.

[vxowner18]

Hi John, didn't know Torque was capable to do this much, I've got soot%, exhaust temp in Torque, I will try to put some useful charts here later.

[JohnLynn]

I tried logging with torque today and found it does work fine, I found it harder to convert the figures to a graph in Excel but here is a screen shot of a short journey.
The vertical axis is both DPF temperature and % soot. The horizontal axis is time. I have only included these three parameters for simplicity and to make it easy for me to find out how to do it.
By coincidence I started off with a cold engine and you can see that the % began to rise then fell back without the DPF temperature ever being hot enough for a "proper" burn. I assume this is yet another instance of the "recalculation"
Do you have all the pids you need for torque? if not if you send me a PM I can send you all the ones that I have.
I hope this chart makes sense:

[vxowner18]

Torque will log data, I have done it in the past but have forgotten how as I use Techstream now. Could you try to log? I would be very interested in seeing if the results, if I can be any help I could try on torque which would mean scratching my head trying to remember how I did it about three years ago, I have a feeling there was a long standing bug in sending the results from torque to a webserver or email or something but pretty sure I did get some usable logs.

Sure, I will work out if I could find any log, I may be able to upload some screen shots if I can find any. As far as I recall, the DPF% dropped 18% from a cold start (54%) to end of trip (36%), I checked on google map, the distance I travelled was about 48km, of which 36km was highway driving (100km/h limit), and I was pretty sure I didn't see any temp reading higher than 450c.

[JohnLynn]

Torque will log data, I have done it in the past but have forgotten how as I use Techstream now. Could you try to log? I would be very interested in seeing if the results, if I can be any help I could try on torque which would mean scratching my head trying to remember how I did it about three years ago, I have a feeling there was a long standing bug in sending the results from torque to a webserver or email or something but pretty sure I did get some usable logs.

[vxowner18]

JohnLynn, Yes the DPF % is going up at a faster rate than what it did before, and I also agree with vxowner18 that the burn completes much quicker than before as well. Only time will tell if this is actually a good thing or not.

Hi 2016VX, I've got my stats here for your reference,

287km to build up from 2%-100% (80% Highway),
'Re-Calculation or Passive Burn' did occur from a cold start to the end of driving (can't keep eyes on Torque while driving lol, so didn't know how that happened in details).
11 mins to burn off (100%-4%) on 60-80km/h limit road with a few red lights.
I didn't notice any change to fuel consumption yet. I have to see that till next fill up.

[2016VX]

JohnLynn, Yes the DPF % is going up at a faster rate than what it did before, and I also agree with vxowner18 that the burn completes much quicker than before as well. Only time will tell if this is actually a good thing or not.

[vxowner18]

Hi John,

I was able to monitor one of past three burns via Torque, I actually didn't see any increasing temperature during the burn (still 500-700c), however, they it did finish in 6 mins (10-15% drop, finished at 2%). I didn't pay much attention to DPF% building up, well, I'm doing it now.

[JohnLynn]

Could I ask 2016VX if he means that his % rises quickly to 100 then starts a regeneration without the "recalculation" that I have shown the graphs for above?
I think that the reported faster and presumably hotter burn must be a good thing but I am not so sure about more frequent burns? A Fortuner owner who's vehicle has had the update some time ago has said that when under heavier load like towing his % is maintained as the temperature increases enough to delay the increase in % soot, in other words passive regeneration at least to some degree.
My late 2015 GXL will be having it's final capped service in a couple of weeks, I will make some recordings before and after the update under varying conditions.

[vxowner18]

Hi 2016VX,

I've got similar sitituation here, 2018 VX, had ECU update/recall three weeks ago, as the technical staff said, that update/recall was all about DPF burns, "it will burn more often, and will finish a burn more quickly". While I haven't noticed any increasing fuel consumption yet, probably due to highway driving, but the regeneration was finished REALLY quickly, I felt like those burns were done within 5-8 minutes (that was 20-40 mins before update). In term of frequency, I will keep eyes on the burns km wise, and then post results shortly.

[2016VX]

My 2016 VX had the ECU update/recall earlier this week and I find that the DPF now goes from 0%-100% very quickly. Tonight for instance, I drove 10km and it went up10% from 38%-48% and yesterday when I drove 15km, it went up 16%. I also find the fuel consumption has jumped up quite significantly, but I haven't done enough kms after the changes to really say this for sure. Does anyone else experience the same things after the update? P.S. I put my name down on the Bannister Las Class action as well.

[nudgebar]

I put my name down for the class action , only because i feel Toyota should be more accountable for getting this system right in the first place. Its fine for them to say that DPF issues will be covered out of warranty , but how long will that promise hold up?

[JohnLynn]

I have filled in the contact form on the above website but I am not sure how many people will bother. I am amazed at how loyal some Toyota customers appear to be. There is a post on another forum from an owner who has had two DPF changes and now needs a turbo. He reports how well Toyota have treated him and says that his turbo "should now be good for another 100,000 Kms"
I would think that it is reasonable to expect a DPF and a turbo to last much longer than this????