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  #1  
Old 02-16-2014, 08:48 PM
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Is DPF issue for 2014 CRD fixed now?

G'Day all,

I've read a ton of threads here that mention the DPF and "Limp Mode" dramas with the 2014 CRD, but they don't actually confirm if the DPF issue in Australia is actually fixed now. Apologies if the fix has been mentioned here, but I can't find that thread.

After many months of working extremely hard to convince the "hugs & kisses" that the 2014 (or 2015) Jeep Grand Cherokee WILL be much more reliable than our previous 2000 WJ-Limited V8, I'd hate for the DPF issue to crop up with the new JGC.

If the DPF Limp Mode happens to my wife while I'm working interstate, it will not be pretty, and I will be in more trouble than Ned Kelly

To be safe should I go with the HEMI? Apart from a higher fuel usage rate, it isn't hampered by the "apparent" CRD's DPF problem.

Any comments, recommendations or reassurances are greatly appreciated.

Cheers,

Marty
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Old 02-16-2014, 09:50 PM
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Re: Is DPF issue for 2014 CRD fixed now?

No, not fixed.
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Old 02-17-2014, 05:22 AM
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Re: Is DPF issue for 2014 CRD fixed now?

I was chatting to the service manager after I got my car serviced and asked about the MY14 DFP problem. He said it was a failure of Pre Delivery, as apparently they need to be reset. Apparently there is no requirement to do this from Jeep as part of the PD process. I cannot say I believe him that a car off the boat would already be sooted up, but he was confident this was correct. I mentioned that people have had problems after they had the dealer reset the regen, but he said they have not done it correctly.
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Old 02-17-2014, 06:18 AM
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Re: Is DPF issue for 2014 CRD fixed now?

I may be wrong for Jeeps, but frequently the DPF filter reset is set to the oil reset.
It highlights why it is so important to reset the oil on change if you're doing it yourself.
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Old 02-17-2014, 06:50 AM
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Re: Is DPF issue for 2014 CRD fixed now?

Quote:
Originally Posted by ENFORCER View Post
I was chatting to the service manager after I got my car serviced and asked about the MY14 DFP problem. He said it was a failure of Pre Delivery, as apparently they need to be reset. Apparently there is no requirement to do this from Jeep as part of the PD process. I cannot say I believe him that a car off the boat would already be sooted up, but he was confident this was correct. I mentioned that people have had problems after they had the dealer reset the regen, but he said they have not done it correctly.
Having suffered the dreaded MY14 limp mode/DPF issue it would be great to get the definitive confirmation from Jeep Australia that this was indeed the cause.
Mine was one of the very early ones delivered. Is this the same for others who have suffered the same issue?
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Old 02-17-2014, 07:47 AM
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Re: Is DPF issue for 2014 CRD fixed now?

As this was not a common problem (if at all) for the MY 11s and MY 12s, they must have either changed the DPF unit fitted to the vehicles or it is a software issue.

My money is that it is a software issue. Hopefully Jeep HQ in the states come up with fix real soon.
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Old 02-17-2014, 03:32 PM
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Re: Is DPF issue for 2014 CRD fixed now?

Quote:
Originally Posted by Swampy View Post
As this was not a common problem (if at all) for the MY 11s and MY 12s, they must have either changed the DPF unit fitted to the vehicles or it is a software issue.

My money is that it is a software issue. Hopefully Jeep HQ in the states come up with fix real soon.
The NS Pajero (my previous car) suffered a similar issue. Pages of problems on similar forums. It was eventually fixed with a software update as you suggest.
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Old 02-17-2014, 07:44 PM
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Re: Is DPF issue for 2014 CRD fixed now?

Quote:
Originally Posted by Twscoot View Post
The NS Pajero (my previous car) suffered a similar issue. Pages of problems on similar forums. It was eventually fixed with a software update as you suggest.
Maybe this will need someone to dedicate time to a tribunal case, like the Nav issue. I don't think anyone would have been hit with the DPF limp enough times to bother, though
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Old 02-22-2014, 09:11 PM
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Re: Is DPF issue for 2014 CRD fixed now?

I thought this might be a bit easier to track in this thread, rather than the Information thread. Here are the instances of the dpf full issue some have reported:

Missionman (MY14)
Filter nearly full issue on 2014 Grand Cherokee - AUSJEEPOFFROAD.COM - AJOR
Didn't enter regen despite highway driving

Fatboy (trailhawk)
Red lights everywhere
No filter full warning, dropped into limp mode

ballfire (fireball)
http://forums.whirlpool.net.au/forum...5715&p=32#r628
Got filter nearly full message, but wouldn't regen despite highway driving, enters limp mode (1900kms)

Chooke
2014 Grand Cherokee information - Australia
Got filter nearly full message, but wouldn't regen despite highway driving, enters limp mode, never noticed a regen occur

Peanut
2014 Grand Cherokee information - Australia
2014 Grand Cherokee information - Australia
Got filter nearly full message and dropped into limp. Not sure if he does highway driving or has ever entered regen?

Twscoot
2014 Grand Cherokee Problems - Australia
Went into limp mode with regen message, says he has done recent highway driving. (6000kms)

ansamoiz
2014 Grand Cherokee information - Australia
Got filter nearly full message but couldn't get ot a highway before limp mode kicked in. (4189kms)

mbro (MY14)
Full diesel filter, electronic throttle control warning & engine malfunction warning
Got filter nearly full message but couldn't get ot a highway before limp mode kicked in. (1300kms)

A10-6
2014 Grand Cherokee information - Australia
Got filter nearly full message but couldn't get ot a highway before limp mode kicked in. (1600kms)

The last 3 seem to be caused by the late message to address the filter being full and not having time to get on a highway. But if these cars are driven periodically at highway speeds for 20-30mins they should be entering regen mode and keep the filter clean.

The 6 previous examples, some of them multiple times suggest to me the car isn't entering regen mode, and this is why the filter is filling up despite regular highway usage. It would be great to know all the prerequisites to entering regen mode.

The only info I've been able to find on CRD regen is from posts like these, but it may be outdated for the VMMotori engine:
Quote:
.....the ECM triggers a regen at approximately 730 miles or 1212 kilometres.....
I bought a daimlerchrysler 3.0l diesel repair student guide. Here is some info on the DPF:

The DPF uses a silicon carbide wall-flow monolith with a platinum coating to trap particulates. The monolith contains a large number of square parallel channels, which run in the axial direction and are separated by thin porous walls. The channels are alternatively open at one end, but plugged at the other. The exhaust gases flow through the walls and escape through pores in the wall material. Particulates, however, are to large to escape and are trapped in the monolith walls. The ECM starts the regeneration of the DPF if the soot load exceeds a performance map value. The ECM determines the load condition of the DPF. A pressure differential sensor provides the pressure input to the ECM. During the regeneration process, the ECM raises the temperature in the DPF to burn off the soot accumulated. Under normal operation, the engine does not produce enough heat to oxidize the soot inside the DPF. This process requires temperatures above 1022 fahrenheit. The ECM activates the following inputs to generate more heat and increase the exhaust gas temperature:
- EGR throttle valve
- Injectors for post injection
- Glow plugs

The ECM uses the DPF differential pressure sensor along with many other inputs to monitor the state of the exhaust emmission system. The (ECM) will set DTCs and may illuminate the MIL to alert the driver of faults within the system.
Swirl motor emulator - a UK solution? - Page 6 - Chrysler 300C Forum: 300C & SRT8 Forums
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  #10  
Old 02-23-2014, 03:40 AM
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Re: Is DPF issue for 2014 CRD fixed now?

Good job Benn0.

Is it worth adding build dates do you think?

At the very least, I think it's great that it separates the issue as you said, from the normal rabble/speak of the general forum and provides owners who are experiencing the issue to compare when, where, how often and resolution provided.

Aside from the Laredo rear-camera debarcle issue, this is perhaps the other most major issue being experienced with the MY14 CRD in Australia.
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Old 02-23-2014, 03:45 AM
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Re: Is DPF issue for 2014 CRD fixed now?

The other major issue is the noisy cold start:

WK2 Diesel Rough Idling - AUSJEEPOFFROAD.COM - AJOR

But yeah, if we can get build dates from each of these, and I'd be interested to know if any of them have ever seen their vehicle do an active regen. I suspect the ECU isn't triggering one for some reason in their vehicle. If you have a MY14 and it has done a regen at some point, then I reckon you are ok.....?
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Old 02-23-2014, 06:29 AM
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Re: Is DPF issue for 2014 CRD fixed now?

what bugs me is that when i was on the highway driving at 110kph then this message pops up


not long after that the car throttle was becoming less and less responsive to the point that the pedal is to the floor and the car is slowly decelerating from 110 -> 60kph and then i'm stuck in 3rd gear



this happened on the gateway motorway qld on a sunday morning 7am with not much traffic.. if this was peak hour weekday i have no doubt i would have been rammed in the arse...

and could have ended like the vw golf death in melbourne although they are claiming it wasnt the golf's fault
Volkswagen Golf not to blame for death of Melbourne woman: coroner | CarAdvice

it is dangerous and jeep needs to fix this.
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