kkarb

Hello. My ML350 Bluetec was touched by the Mercedes recall for emissions update 2020. (ECU firmware update). I did the update, and i notice one thing is different in xentry.. Before the update, a dpf regen always started at 100% fill level (soot) in dpf, allways at 100%. But after i updated to newest ecu firmware, dpf regen starts always at 50% fill level (soot).. But, with the new firmware it takes longer time (more kilometers) to reach 50%, than it took to reach 100% before the update. Does anyone know something about this? Either is the logic for dpf rebuilded / changed in the newest ecu firmware, otherwise my values in dpf is totaly wrong..

Regards

Etienne Lau

Don't know. As far as I know for those of us here in the US, nothing is happening. Maybe in your country it's different....

kkarb

Ok, im in Europe, Norway. Here is a link to the official recall. You ca tap in your win, and check if your car is affected. Technische Maßnahmen und Rückrufe (mercedes-benz.de)

Regards

Etienne Lau

That link does not apply to the US/Canadian vehicles. MB has not done anything regarding the Bluetec issues in US/Canada. No recall, no nothing. What you posted is strictly ROW(rest of the world).

Diabolis

Something is in the works here as well. I'm told that MBNA appears to be bringing in large shipments of catalytic converters and NOx sensors for the Bluetecs.

P.S. This may be it: https://www.consumerreports.org/emis...ns-settlement/

trigital

Your observations is perfect!

Regeneration, will always starts at 100%.


But, for reaching 100% you need to drive only on max rpm a suficient time and distance...or to drive only on fuel reserve.

As on max rpm, the smoke will be present or without enough fuel, the regeneration will be postponed...

As you correctly notice, with the new software, you can drive much more till reach 50%....

This means that with the new software, the engine produce much less smoke... particles.

50% load, means 50% filled with particles. No particles, no load.

Now, because all of this, a preventive regeneration routine ( shorter with less fuel consumption) is started, ( as I remember) every 250km for city drive and 500km on highway drive.

Also, the regeneration process can be started ( in colder countries) just for helping the engine to reach much faster the operating temperature.

The new software is genial and your values is exactly as it should be.

kkarb

Thanks for great answare Its hard to search info about this at the web, MB is not telling so much about this dpf regen logic.
But, im totally agree with you, The new software is genial, and my car my car is much better after flashing the ecu to newest software / firmware.

Regards
Norway

trigital

This SW even accept a slightly increase of response, like the Agility setting on newer models.

You can contact me on PM, if needed.

kkarb

I also have noticed this increase😊. The car is a bit quicker from the botton👍👍