The regeneration cycle normally takes 15 to 25 minutes. It’s the extreme heat required for the DPF regeneration that causes most of the other problems. To be more specific, it’s the interruption of the DPF regeneration heat cycle that’s the root cause of most of the trouble. For years, Mercedes told everyone the DPF regeneration is automatic. If the DPF warning lamp illuminates, it is necessary for the vehicle to be driven at 40 km/h or more with the engine at operating temperature in order for Automatic Regeneration to occur. After approximately 20 minutes of driving under these conditions the DPF warning lamp should switch OFF indicating Automatic Regeneration has successfully The vehicle can be driven at speeds above 70 km/h for at least 10 minutes, allowing regeneration to take place and the warning light to go out. If soot particles remain or regeneration does not occur correctly, the particles will accumulate and when the soot load reaches 75%, the filter must be cleaned manually. to ash during filter regeneration. Regeneration occurs when the filter element reaches the temperature required for combustion of the PM. “Passive” regeneration occurs when the exhaust gas temperatures are high enough to initiate combustion of the accumulated PM in the DPF, without added fuel, heat or driver action. “Active” DPF replacement cost. Parts: $2,000 – $4,000 ; Labor: $500 – $1,000; Total repair over $3,500 typically; Preventing DPF failure through proper regen attention saves thousands in repairs. Summing Up DPF Regen. While regeneration may sound complex, it‘s a key emissions process that occurs automatically under normal driving once you Likewise, driving in dusty or dirty conditions can also lead to more frequent regeneration being required.On the other hand, if you mainly drive on long journeys at motorway speeds, your DPF will become less clogged and will therefore need less frequent regeneration.Most car manufacturers recommend that DPF regeneration should happen every 300 You get better combustion, faster more efficient burn and a dramatic reduction in soot. Less soot = Less need for DPF regeneration. That’s how DPF Remedy solves DPF problems starting with the first tank of treated fuel. Many of our clients have seen daily regens go to weekly or monthly regens. Besides passive regeneration processes, you can do an active regeneration process. When you see the regen light on during your travel, there is no need to panic. You can fix this issue by driving your vehicle for around 10 minutes at over 65 kilometers per hour. 2140 posts · Joined 2011. #3 · Jan 18, 2016. There are three types of regeneration: passive, active and forced. Actually four types, if you count replacing a irreparably clogged DPF with a new one. Passive regeneration takes place during normal driving but, due to the high exhaust temperatures needed, usually only on long or high speed runs. Depending on your driving, active regeneration may happen as often as once a day. If you do a lot of stop and go, it can happen even more often. Frequency depends on duty cycle and how much soot collects – as often as once a day or every other day An active regeneration could take up to one-half hour or more. R61UE.