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  #853  
Old 02-24-2015, 12:45 AM
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Re: Is DPF issue for 2014 CRD fixed now?

The "NEW" technique...

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  #854  
Old 02-24-2015, 02:03 AM
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Re: Is DPF issue for 2014 CRD fixed now?

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Originally Posted by Benn0 View Post
Groan.....

Yeah and that excuse will work with the police or radar camera


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  #855  
Old 02-24-2015, 03:40 AM
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Re: Is DPF issue for 2014 CRD fixed now?

MY14 Laredo @ 26500kms and we have never seen or noticed a regen occur. Both front axles replaced and then a 16,000 kms trip no issues. Recently serviced pollen filter replacement mandated, neglected to rotate tires as requested so I waited on pick up and had them do it.... and confirmed latest RRT carried out.

Vehicle drives smooth as silk in eco and in Sport.

Love the vehicle mostly country miles........ Wondering why I have not seen a regen and does this suggest the filter has never been cleaned.

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  #856  
Old 02-24-2015, 04:34 AM
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Re: Is DPF issue for 2014 CRD fixed now?

This is my first post to this thread - I've found some great replies so far. I've had my Grand Cherokee Blackhawk since December - I had the dreaded "DPF Filter Full drive at highway speeds to remedy" randomly pop up before I could do anything else within seconds it threw the car into limp mode - without knowing much about what was going on I got the car towed to my local Jeep workshop where they performed a manual regen and upgraded the software to the latest update which is supposed to fix the issue. I haven't had a problem since touch wood. Although tonight after pulling into my driveway after work I noticed the familiar burning plasticy smell coming from the rear (which is what happened last time before the car went into limp mode) so tomorrow morning will be interesting. I've spent 70% of the time driving this car on the highway at speeds of over 100kmh. The most frustrating thing is it doesn't tell you if it's doing a regen - surely Jeep can implement this with a simple message that says "Regen in progress ___ per cent complete..."??

Quick question - is it bad for the car to shut it down while doing a regen? Surely you can't always know if it's doing one or not??

Apart from that I absolutely love the car - the scariest thing is not knowing if it's fixed and what if you're in the middle of no where? So far after reading responses everyone that has had the latest software update haven't had any issues so hopefully it stays that way! Will keep you guys posted.
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  #857  
Old 02-24-2015, 05:01 AM
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Re: Is DPF issue for 2014 CRD fixed now?

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Originally Posted by dazpad View Post
"Just, when your driving, put your foot down every now and again. It'll stop the filter sooting up."
When I read this Daz, I had a sudden vision of all Perth's GC owners taking to the freeway late at night...........putting our foot down.........to get rid of the soot!!!

Glad to see we get these wonderful snippets of advice no matter where we are in the country.
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  #858  
Old 02-24-2015, 05:43 AM
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Quote:
Originally Posted by Hughesy1991 View Post
The most frustrating thing is it doesn't tell you if it's doing a regen - surely Jeep can implement this with a simple message that says "Regen in progress ___ per cent complete..."??
The thing I don't get is some owners are reporting seeing the message 'Exhaust*System Regen in Process Continue Driving' and others are not.
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  #859  
Old 02-24-2015, 06:13 AM
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Re: Is DPF issue for 2014 CRD fixed now?

Quote:
Originally Posted by Rocksfly View Post
MY14 Laredo @ 26500kms and we have never seen or noticed a regen occur. .
.
.

Love the vehicle mostly country miles........ Wondering why I have not seen a regen and does this suggest the filter has never been cleaned.

Cheers
It will have done a regen (quite a few of them) without you noticing.
Even driving a highway cruising speeds we've observed the exhaust is still too cool to completely burn away accumulated soot in the DPF. A long highway drive might still accumulate some soot albeit at a slower rate than a short trip to the shops from a cold start.

The DPF does not hold much at all , (I'm guessing something of the order of only 50grams). I've done a regen every 10 days or so recently, some longer trips but more short ones <10km.



Quote:
Originally Posted by Hughesy1991 View Post
This is my first post to this thread - I've found some great replies so far. I've had my Grand Cherokee Blackhawk since December - I had the dreaded "DPF Filter Full drive at highway speeds to remedy" randomly pop up before I could do anything else within seconds it threw the car into limp mode - without knowing much about what was going on I got the car towed to my local Jeep workshop where they performed a manual regen and upgraded the software to the latest update which is supposed to fix the issue. I haven't had a problem since touch wood. Although tonight after pulling into my driveway after work I noticed the familiar burning plasticy smell coming from the rear (which is what happened last time before the car went into limp mode) so tomorrow morning will be interesting. I've spent 70% of the time driving this car on the highway at speeds of over 100kmh. The most frustrating thing is it doesn't tell you if it's doing a regen - surely Jeep can implement this with a simple message that says "Regen in progress ___ per cent complete..."??

Quick question - is it bad for the car to shut it down while doing a regen? Surely you can't always know if it's doing one or not??

Apart from that I absolutely love the car - the scariest thing is not knowing if it's fixed and what if you're in the middle of no where? So far after reading responses everyone that has had the latest software update haven't had any issues so hopefully it stays that way! Will keep you guys posted.
Welcome!

We don't know exactly what was changed in the software update, but the situation where the "warning" and the limp mode are triggered virtually simultaneously is obviously wrong. Active regens might be triggering at lower soot loading than before? or they might have delayed the setting for the limp mode because it was programmed incorrectly coming on too early?

We've observed several active regens in this thread which are triggered at 65% full when on the highway or seemingly at around 71-73% when in slower traffic. I'm assuming 80% is when the message comes in.

Stopping a regen (without the message) while it's in progress I wouldn't expect to cause a problem, unless you park the car on some long dry grass with a 600degC exhaust.

I know, I've aborted 3 regens when partially completed. The soot will have started to burn away soon after beginning, so it will have reduced load but might not fully burn to a "clean" filter.

I had one today that started during a 7km trip it only went for about 7-8 minutes and burned from 72% down to 15% (measured with an OBD adaptor and smartphone app). Running through the full automatic sequence will burn down to about 8%.


I read that back when Ford introduced DPF to some of the pickups in the USA (2008-09 ??) they used to have a message every time the truck did a regen and they used happen quite often as they were just on an hour-meter rather than with DPF differential pressure monitoring. American drivers thought that there was something wrong with their truck.
Car makers generally would prefer that you didn't know when it was happening and "wasting" fuel.


Really enjoying my Jeep too. I missed it in the last few days as I've been in Tassie with rented Mistubushi Outlinder. Petrol so no DPF but no torque either . Glad to hand it back and retrieve my Jeep from the airport.
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  #860  
Old 02-24-2015, 06:56 AM
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Re: Is DPF issue for 2014 CRD fixed now?

Had the 10k service today and at the end of the invoice:
"REPROGRAMME PCM CARRIED OUT TSB18-019-14 REV A".



Will keep data logging to see if anything has changed compared to what I was seeing before the update.
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  #861  
Old 02-24-2015, 08:56 AM
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Re: Is DPF issue for 2014 CRD fixed now?

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Originally Posted by XtRmn8 View Post
Had the 10k service today and at the end of the invoice:
"REPROGRAMME PCM CARRIED OUT TSB18-019-14 REV A".



Will keep data logging to see if anything has changed compared to what I was seeing before the update.
Not a jeep Aussie park by any chance? My mate was there today and a guy was picking his GC up and they tried to hit him for $620 after quoting $400!

Interestingly, my mate said there was a note on the service counter saying the DPF is not covered by warranty, he didn't read it all though.id be mightily pissed off if I had to have it replaced and this is the case.

Early days for me with only 1,600ks in my October build + the DPF update done at 1,000k service , mostly urban/peak hour driving and two long trips up/down the freeway with not issue yet.
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  #862  
Old 02-24-2015, 03:56 PM
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Re: Is DPF issue for 2014 CRD fixed now?

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Originally Posted by Kizz302 View Post
!

Interestingly, my mate said there was a note on the service counter saying the DPF is not covered by warranty,.

This is a try on based on the warranty book which says filters are not covered. They tried it on me when mine was replaced. The DPF costs around $7k. They backed down when I rang fair trading while standing at the counter (no one actually answered by the way).
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  #863  
Old 02-24-2015, 04:09 PM
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Re: Is DPF issue for 2014 CRD fixed now?

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Originally Posted by Fatboy View Post
This is a try on based on the warranty book which says filters are not covered. They tried it on me when mine was replaced. The DPF costs around $7k. They backed down when I rang fair trading while standing at the counter (no one actually answered by the way).
The importer is crazy to let these kinds of things go on.

Massively brand damaging.
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  #864  
Old 02-24-2015, 04:22 PM
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Re: Is DPF issue for 2014 CRD fixed now?

Quote:
Originally Posted by Steve1307 View Post
It will have done a regen (quite a few of them) without you noticing.
Even driving a highway cruising speeds we've observed the exhaust is still too cool to completely burn away accumulated soot in the DPF. A long highway drive might still raccumulate some soot albeit at a slower rate than a short trip to the shops from a cold start.

The DPF does not hold much at all , (I'm guessing something of the order of only 50grams). I've done a regen every 10 days or so recently, some longer trips but more short ones <10km.

Legend Steve.... I have been reading about all your good work testing the dongle and running state. Can't say I understand most of it but I got the jist that your GJC was running as it should and to your expectations.




Welcome!

We don't know exactly what was changed in the software update, but the situation where the "warning" and the limp mode are triggered virtually simultaneously is obviously wrong. Active regens might be triggering at lower soot loading than before? or they might have delayed the setting for the limp mode because it was programmed incorrectly coming on too early?

We've observed several active regens in this thread which are triggered at 65% full when on the highway or seemingly at around 71-73% when in slower traffic. I'm assuming 80% is when the message comes in.

Stopping a regen (without the message) while it's in progress I wouldn't expect to cause a problem, unless you park the car on some long dry grass with a 600degC exhaust.

I know, I've aborted 3 regens when partially completed. The soot will have started to burn away soon after beginning, so it will have reduced load but might not fully burn to a "clean" filter.

I had one today that started during a 7km trip it only went for about 7-8 minutes and burned from 72% down to 15% (measured with an OBD adaptor and smartphone app). Running through the full automatic sequence will burn down to about 8%.


I read that back when Ford introduced DPF to some of the pickups in the USA (2008-09 ??) they used to have a message every time the truck did a regen and they used happen quite often as they were just on an hour-meter rather than with DPF differential pressure monitoring. American drivers thought that there was something wrong with their truck.
Car makers generally would prefer that you didn't know when it was happening and "wasting" fuel.


Really enjoying my Jeep too. I missed it in the last few days as I've been in Tassie with rented Mistubushi Outlinder. Petrol so no DPF but no torque either . Glad to hand it back and retrieve my Jeep from the airport.
T
It's important to let the wider community know when the product is meeting expectations. Hope you enjoyed your time in Tassie. Appreciate your time and assistance to this matter, you and others,for us all.

Cheers Steve.

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