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I contacted Toyota to discuss the operation and behaviour of the DPF system. The differential sensors that are located before and after the DPF unit are only used as a fail safe if the DPF filter becomes blocked. It was explained to me that Toyota has an algorithm to determine when a burn should occur which includes fuel used and distance travelled.
What I have observed is that the burn usually occurs between 200 and 300km and lasts approximately 20 to 30km. This is why I have experienced burns even after having driven for 3hrs at 100+km/h which would be ideal to burn the DPF particulate.
So it doesn't matter how you drive as the burn is pre programmed to run. So over a complete tank you would expect to burn approximately 6 times and use excess diesel for about 150km of the tank. This may explain the higher fuel consumption being reported by most people in comparison to the previous 3l D4D.
Thanks
Doug
What I have observed is that the burn usually occurs between 200 and 300km and lasts approximately 20 to 30km. This is why I have experienced burns even after having driven for 3hrs at 100+km/h which would be ideal to burn the DPF particulate.
So it doesn't matter how you drive as the burn is pre programmed to run. So over a complete tank you would expect to burn approximately 6 times and use excess diesel for about 150km of the tank. This may explain the higher fuel consumption being reported by most people in comparison to the previous 3l D4D.
Thanks
Doug
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