Thanks! Looks like a good idea for cars that didn’t get a lot of highway to be able to succesfuly regen fully and often.

Xentry or probably any diagnostic with live data, lets you check the delta P on that DPF. This is the sensor that sits in the chassis above the DPF that attaches to the steel lines.

This parameter measures the clog level of the DPF and triggers the regen function.

I will get the computer out on my cars and see how bad the delta P looks. May try this if my cars aren’t getting enough highway to keep them clean.

Dealer replaced the DPF on my 2008 ML right before I bought it.

The 2008 E320 doesn’t show in the history it’s been replaced, but the prior owner put a lot of highway miles on it. I will do a delta P check on it and see how it reads.

Took my 2014 ML350 in for one last catchall fix before the CPO ran out and they ended up replacing the whole entire exhaust system front to back, for free, because I complained of noise from the undercarriage. I got a new DPF “reduction catalyst” and rear muffler.

The W210 has a catalytic filter and these too can get clogged. Unfortunately there is no delta P sensor on these, and if it gets clogged, you get the “banana in the tail pipe” syndrome with no warnings.

__________________
The OM 642/722.9 powered family
Still going strong
2014 ML350 Bluetec (wife's DD)
2013 E350 Bluetec (my DD)

both my kids cars went to junkyard in 2023
2008 ML320 CDI (Older son’s DD) fatal transmission failure, water soaked/fried rear SAM, numerous other issues, just too far gone to save (165k miles)
2008 E320 Bluetec (Younger son's DD) injector failed open and diluted oil with diesel, spun main bearings (240k miles)

1998 E300DT sold to TimFreeh
1987 300TD sold to vstech