yes, when regeneration started, the EGR was closed, and the exhaust temeprature stays to around 20 min or so to 650 C. Under normal driving conditions the exhaust / DPF temp is around 350 - 400 C running 75mph. Even knowing that the regenertion was taking place I couldn't indetify any symptoms in car's behaviour. I have 2007 ML 320 CDI, dealer found code 2078-008 for the DPF sensor by SDS and also found clogged DPF i.e DPF too full to regnerate? Dealer replaced DPF sensor, replaced R&R hoses and cleaned off ash and soot and manually regenerated DPF ~$650 with labor. Car is running I do not know how long it will run. Dealer recommend replacing DPF for If the DPF warning light comes on it’s because the engine management system needs to ‘actively’ regenerate the DPF. You should take your car on a run to allow the regeneration process to take place. Most engine management systems will actively regenerate the DPF when the car is driven at speeds above 40mph for around 10 to 15 minutes. Consult the owner’s manual, and do what it says. A flashing orange DPF light (or whatever the primary activation mode is) just tells you that the filter is getting loaded up, and a burn or regeneration is necessary and/or overdue. The car knows this because it measures the pressure drop across the DPF. All vehicle models in the population have been identified with at least one of these DPF regeneration frequency diagnostic conditions: The ECM DTC P2459 regeneration frequency diagnostic does not adequately detect when DPF regeneration occurs more frequently than should be expected based on engine operating conditions. Sep 14, 2020 at 7:12am Admin said: The 1700E is a timed Regeneration normally in the 4 to 5 hour range it will start regen. Best to keep RPM in operating range like 1800 RPM+. what happens when regen light stay on and won't go out. You need to contact your local dealer it could be locked up in a Regeneration. LRP8s. Active regeneration is when raw fuel is injected into a diesel oxidation catalyst to reach the appropriate DPF regeneration temperatures. Passive regeneration and dynamic generation do not require input from the vehicle operator. Passive regeneration does not require checking engine light codes shown on the vehicle dashboards. 3. Passive Press and hold button 1 under the parked regeneration icon (A) on TechControl DPF status screen for 5 seconds. NOTE: If cancellation of parked regeneration is necessary, your best option is to depress button 4 under icon (B) on the TechControl DPF status screen. Level 1. Your Blue DPF smart switch will be lit with a steady light on the top half of the switch. This will let you know that a regen is needed. You can simply press the top of the switch for a few seconds to start a regen or you can do a parked regen if you like. Parked is not required at this point. I love having the gauge in the instrument cluster that show the level of the DPF, as well as when it is actively in regen mode. I watched the first couple regen cycles and it happened to kick off when I expected, the filter was about half capacity, and I had hit the highway and held speed for about 15 minutes when it started regen. 20 or so Ideal rev spectrum is about 1800 - 2000 rpm. That would mean, ideally, when driving 90 km/h, I should drive in 5th gear. I sometimes have a regeneration when driving 50 km/h in 4 th gear. So nowhere near high revs. The highest revs I get on the motorways driving approx 110 km/h, so just under 2000 rpm.

how long does a dpf regen take