Regenerations within the DPF are necessary to “clean-out” as much of the engine particulates as possible. If regeneration does not occur periodically it could create problems with the engine. There are three types of regenerations that can occur: passive, active, and forced. Passive regeneration I bought it used over a year ago, and my DPF level would reach 112 to 116% and then start regeneration. It would regenerate "100%" down to 12 to 16%. I had some work done at my repair shop, and they did an oil change with a forced regeneration. After that, my regenerations were starting at 103% going to 3%. Do not mean to hijack the thread. But the above link is dead and the scanner I bought from foxwelltool.com was 30$ cheaper I just got mine 2 weeks ago, awesome tool. Here***8217;s a rundown of what I***8217;ve found it can do:-Battery registration-Injector adjustments (You can also do adaptations if you change injectors) A blocked DPF will not work correctly, to clear this blockage there are two types of regeneration which are commonly used to remove the build-up of soot. Newer vehicles engage active regeneration, which is the process of removing the accumulated soot from the filter by adding fuel post combustion to increase exhaust gas temperatures and burn Removal of ash requires off-car cleaning methods or replacement of the DPF. Some manufacturers will bring on a warning and fault code once an ash limit has been reached, with many providing the number in their service information – eg. From Erwin, 2011 VW Amarok 2.0L, Limit for changing DPF = 175ml. A vehicle with DPF blockage due to melting You cannot “force” regenerate the dpf with a Carly or other device, you can only send a regeneration “request”. If there is a fault preventing regeneration, it still won’t. Also, our 335d was showing all 6 glow plugs and controller as failed but the dpf was still regenerating normally, we ran it like this for 4 months through summer DPF Regeneration To combat the fact that many diesel car drivers are not driving in a way that allows passive DPF regeneration, many manufacturers have designed an active regeneration process. This takes place when the DPF filter reaches a certain point of gathered soot, and the ECU will provide a fuel injection into the engine to increase q0Yq.
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    • how does bmw dpf regeneration work