DPF monitoring tools - anyone
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ML 320 CDI
DPF monitoring tools - anyone
A lot of modern diesel vehicles nowadays (mostly trucks) have DPF light /indicator on the dashboard. I dont know why Mercedes diesels do not have this useful indicator (Well, i havent been to the showroom lately) on my 2007 ML CDI. I do have a ELM327 OBD2 connector. I am using DashCommand currently. Has anyone here tried using the DPF functionalities of another iPad app called NovaScan ? It claims it can "Request to Initiate DPF Regen".
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2019 WS222 S450 4-Matic / 2007 W211 E350 4Matic (Sold) / 2008 X164 GL320 CDI
Interesting question.
If the "Request to Initiate DPF Regen" is in the standard, I wonder if MB has the option of ignoring it.
Although, since it is a "request" maybe that makes it optional.
Standards are all about the meaning of words.
If the "Request to Initiate DPF Regen" is in the standard, I wonder if MB has the option of ignoring it.
Although, since it is a "request" maybe that makes it optional.
Standards are all about the meaning of words.
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ML 320 CDI
There are already 3 DPF PIDs identified in the OBD2 standard (SAE J1979).
http://en.wikipedia.org/wiki/OBD-II_PIDs
7A Diesel particulate filter (DPF)
7B Diesel particulate filter (DPF)
7C Diesel Particulate filter (DPF) temperature
My guess is the first 2 is for DPF pressure (before/after DPF). Yes, perhaps the "initiate regeneration" functionality maybe a proprietary function of MB. But I want to "see" the current status of my DPF so I know when it is due for a regen or not. Why? same reason why there is a DPF light on trucks and other modern diesels.
http://en.wikipedia.org/wiki/OBD-II_PIDs
7A Diesel particulate filter (DPF)
7B Diesel particulate filter (DPF)
7C Diesel Particulate filter (DPF) temperature
My guess is the first 2 is for DPF pressure (before/after DPF). Yes, perhaps the "initiate regeneration" functionality maybe a proprietary function of MB. But I want to "see" the current status of my DPF so I know when it is due for a regen or not. Why? same reason why there is a DPF light on trucks and other modern diesels.
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From: 1 hours drive north of Sydney Australia
2007 W204 220CDI Classic Sedan
I would, so it does not complete one in my garage.
How long are the DPF's lasting ? .
Does the longevity depend on how the car is driven ?
Thanks.
How long are the DPF's lasting ? .
Does the longevity depend on how the car is driven ?
Thanks.
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W211 e320 CDI
Or hundreds of $$$ on tubing and welding supplies and a reflash to kill off that non functional DPF system, and a lot of downtime and custom work in the garage. DPF is such a waste of fuel, from the exducer turbine restriction to the process of lighting off the regen cycle, as dumb as egr but even more nefarious in my mind. I spent close to a thousand in custom pipes work and flashing just to kill off egr on my inline six W211, of course every time it get over 40 mpg average on a trip it seems worth every penny.
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It does it when running at higher speeds for a period of time, it is not done when idling.
From what I have read the way to keep your DPF healthy is to;
Avoid short trips.
Avoid unnecessary excessive idling.
Use good fuel and always use proper oil.
Pay attention to other issues that trip the "Check Engine" light. (Don't just keep driving for a long time because it "feels" OK)
There have a been a few people here mentioning they needed a replacement, but far more well over 100K and doing OK. (Of course OK is relative because we don't know how much time/miles we have left)
MB likes to replace parts with new at the highest possible cost. (It does help keep the car "Like New"), but the trucking and heavy diesel world is moving to off-vehicle regeneration when normal regeneration fails.
With the number of Sprinters in commercial service, getting our MB DPFs regenerated is going to get easier.
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From: 1 hours drive north of Sydney Australia
2007 W204 220CDI Classic Sedan
It does it when running at higher speeds for a period of time, it is not done when idling.
From what I have read the way to keep your DPF healthy is to;
Avoid short trips.
Avoid unnecessary excessive idling.
Use good fuel and always use proper oil.
Pay attention to other issues that trip the "Check Engine" light. (Don't just keep driving for a long time because it "feels" OK)
There have a been a few people here mentioning they needed a replacement, but far more well over 100K and doing OK. (Of course OK is relative because we don't know how much time/miles we have left)
MB likes to replace parts with new at the highest possible cost. (It does help keep the car "Like New"), but the trucking and heavy diesel world is moving to off-vehicle regeneration when normal regeneration fails.
With the number of Sprinters in commercial service, getting our MB DPFs regenerated is going to get easier.
From what I have read the way to keep your DPF healthy is to;
Avoid short trips.
Avoid unnecessary excessive idling.
Use good fuel and always use proper oil.
Pay attention to other issues that trip the "Check Engine" light. (Don't just keep driving for a long time because it "feels" OK)
There have a been a few people here mentioning they needed a replacement, but far more well over 100K and doing OK. (Of course OK is relative because we don't know how much time/miles we have left)
MB likes to replace parts with new at the highest possible cost. (It does help keep the car "Like New"), but the trucking and heavy diesel world is moving to off-vehicle regeneration when normal regeneration fails.
With the number of Sprinters in commercial service, getting our MB DPFs regenerated is going to get easier.
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2019 WS222 S450 4-Matic / 2007 W211 E350 4Matic (Sold) / 2008 X164 GL320 CDI
I am not sure I want to "play" with the DPF.
I just want it to work as well as possible for as long as possible.
If someone confirmed that extra regen cycles helped (without wasting too much fuel, or being hard on other systems like EGR) I would be interested.
I just want it to work as well as possible for as long as possible.
If someone confirmed that extra regen cycles helped (without wasting too much fuel, or being hard on other systems like EGR) I would be interested.
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ML 320 CDI
On the VW/Audi TDI forums - they say their radiators run and the RPMs are unusually higher during a regen cycle. I never really experienced anything like that on my CDI. All other truck based diesels have RPMs up to 2K idle speed during regen.
I want to monitor the differential pressure now when my DPF is healthy so I can compare the numbers years later. I also want to know when a regen is approaching/happening so I dont interrupt it when it is happening. During winter, it is very hard for the exhaust to reach optimum temps for a complete and effective regen (>600F). Its even harder if folks take short drives in the winter. We know the DPF will not last forever, I think everyone will agree that DPF deterioration does not happen overnight....this is a slow progressive failure that nobody can "see" unless you have the proper OBD tools. Also, it helps used buyers determine how much life is left on the DPF.
I want to monitor the differential pressure now when my DPF is healthy so I can compare the numbers years later. I also want to know when a regen is approaching/happening so I dont interrupt it when it is happening. During winter, it is very hard for the exhaust to reach optimum temps for a complete and effective regen (>600F). Its even harder if folks take short drives in the winter. We know the DPF will not last forever, I think everyone will agree that DPF deterioration does not happen overnight....this is a slow progressive failure that nobody can "see" unless you have the proper OBD tools. Also, it helps used buyers determine how much life is left on the DPF.
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From: McDade, Texas
W211 e320 CDI
Look into PLX Kiwi Wifi, it's an OBDII streamer via a small wifi network to your phone or tablet, the cool thing is you can add expansion modules like EGT and Exhaust manifold pressure or even pairs, one set upstream of the DPF and one downstream. Since regen cycle requires literally injection ing fuel into the exhaust manifold durum ing oxygen rich running, very light throttle or idle speeds if you only want to know when its on I'm sure a very simple diy led circuit could be made for way less money, lower tech, but if you only want to know when it's active...seems easy enough?
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From: McDade, Texas
W211 e320 CDI
Personally, I don't. I want it gone off any diesel that ends up in my driveway, the only reason my Sprinter still has any of its emissions BS on it is warranty. I think my inline 6 W211 is far cleaner now in terms of co2/mile or soot/mile at 40 mpg than it was at the stock 27 mpg, it didn't have DPF though, just cat and egr from new. I am thinking of adding a TDI Cup, 6 speed manual to the fleet, all that BS will be gone within days of buying the right one, I think 50+ mpg would be sort of cool for a daily driver.
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2019 WS222 S450 4-Matic / 2007 W211 E350 4Matic (Sold) / 2008 X164 GL320 CDI
Unfortunately, as the engines get more efficient, the soot becomes finer, and it moves from being a visible annoyance to a toxic pollutant capable if being inhaled deep into the lungs where it is a shown carcinogen.
So, while I agree the current gen of DPF are sub-optimal, I think they are necessary for any significant adoption of diesel for light vehicles.
So, while I agree the current gen of DPF are sub-optimal, I think they are necessary for any significant adoption of diesel for light vehicles.
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'87 190D, '96 E300D (2), '07 ML320 CDI
Or hundreds of $$$ on tubing and welding supplies and a reflash to kill off that non functional DPF system, and a lot of downtime and custom work in the garage. DPF is such a waste of fuel, from the exducer turbine restriction to the process of lighting off the regen cycle, as dumb as egr but even more nefarious in my mind. I spent close to a thousand in custom pipes work and flashing just to kill off egr on my inline six W211, of course every time it get over 40 mpg average on a trip it seems worth every penny.
That is where I am headed.
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2019 WS222 S450 4-Matic / 2007 W211 E350 4Matic (Sold) / 2008 X164 GL320 CDI
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From: USA, EU
06 E320 CDI (GONE), 14 Jeep GC EcoDiesel, 01 Disco II (GONE), 09 BMW X3 3.0 Si Xdrive
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Joined: Aug 2010
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From: Charlotte NC area
2019 WS222 S450 4-Matic / 2007 W211 E350 4Matic (Sold) / 2008 X164 GL320 CDI
Senior Member
Joined: Mar 2009
Posts: 430
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From: USA, EU
06 E320 CDI (GONE), 14 Jeep GC EcoDiesel, 01 Disco II (GONE), 09 BMW X3 3.0 Si Xdrive
Absolutely love the powertrain but finding myself overlooking the interior fit and finish, I guess I'm expecting higher quality I'm used to with MB. Overall it is very capable vehicle with tons of options for lot less than the ML. Plus the powertrain looks more customer friendly for service.
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2019 WS222 S450 4-Matic / 2007 W211 E350 4Matic (Sold) / 2008 X164 GL320 CDI
What does the owners manual say about the notice.
Are you supposed to do anything differently?
Typically you don't show anything on the instrument panel if it is not "actionable", and I wonder is the warning so you know what is happening in case you feel it driving differently, or if there is some thing you are not supposed to do.
(I can't imagine you are supposed to drive past your destination just because it is in regen?)
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From: USA, EU
06 E320 CDI (GONE), 14 Jeep GC EcoDiesel, 01 Disco II (GONE), 09 BMW X3 3.0 Si Xdrive
What does the owners manual say about the notice.
Are you supposed to do anything differently?
Typically you don't show anything on the instrument panel if it is not "actionable", and I wonder is the warning so you know what is happening in case you feel it driving differently, or if there is some thing you are not supposed to do.
(I can't imagine you are supposed to drive past your destination just because it is in regen?)
Are you supposed to do anything differently?
Typically you don't show anything on the instrument panel if it is not "actionable", and I wonder is the warning so you know what is happening in case you feel it driving differently, or if there is some thing you are not supposed to do.
(I can't imagine you are supposed to drive past your destination just because it is in regen?)
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Posts: 12,516
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From: Charlotte NC area
2019 WS222 S450 4-Matic / 2007 W211 E350 4Matic (Sold) / 2008 X164 GL320 CDI
Seems on line there are a lot of people commenting on the diesels with DPF lights and messages.
I wonder how MB has made it seamless for two generations of engines now?
Are we just blissfully unaware, or do our diesels really require less attention to DPF regen cycles?
I wonder how MB has made it seamless for two generations of engines now?
Are we just blissfully unaware, or do our diesels really require less attention to DPF regen cycles?
