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  #1  
Old 10-13-2014, 09:31 PM
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Service 4wd system

Has ANYONE figured out a permanent fix for this?

I've tried clearing the code. Works for about 24 hours.

I've tried pulling Fuse #25. Run it without the fuse... reinstall with engine running... shut off & restart engine. Lasts about the same.

I haven't swapped out the solenoid in the diff yet... is that even a permanent fix, or just a temporary one?

It's getting annoying.

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Old 10-14-2014, 01:03 PM
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Re: Service 4wd system

So.. I guess not. I read on one of the threads here that installing a non-reflashed FDCM can work. There was also a July update to the N23 re-flash procedure (Service Bulletin 21-022-14 REV. A) that has shown some promise.

Has anyone tried any of these and found success?
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Old 10-14-2014, 08:45 PM
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Re: Service 4wd system

So... called the local dealer. Taking it in next Wednesday to have them perform the revised N23 Software patch per TSB 21-022-14 REV. A

Should be covered by the original recall... but we'll see what the dealership tries to pull.
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Old 10-16-2014, 05:03 PM
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Re: Service 4wd system

TSB 21-022-14 has fixed my n23 error so far. But Jeep wouldn't pay for it, came out of my pocket. BS. Let me know if you have different results.
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Old 10-16-2014, 05:07 PM
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Re: Service 4wd system

Quote:
Originally Posted by Bounty Hunter View Post
TSB 21-022-14 has fixed my n23 error so far. But Jeep wouldn't pay for it, came out of my pocket. BS. Let me know if you have different results.
I've heard mixed results. I called Chrysler's 800 number. They told me if the dealer traces the problem to the flash (which I think there is PLENTY of evidence it's the only source to the problem), then it's supposed to be done free of charge... including diagnostics.

We'll see.
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Old 10-22-2014, 08:29 PM
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Re: Service 4wd system

Well, got the run-around from the dealership. I'll have to deal with Chrysler to get reimbursed.

But, so far... 4 Low works.

Let's see for how long!
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Old 11-16-2014, 07:08 PM
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Re: Service 4wd system

Hi, just read ur update. I have a 4.7 v8 Sept 05 grand Cherokee with service 4wd system
Since the n23 recall. I take it they have come up with a new software update to fix the original recall update which has been causing this fault to loads of jeeps? They keep denying it to me??

Thanks Steve


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Old 11-16-2014, 08:07 PM
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Re: Service 4wd system

Quote:
Originally Posted by Foxy69 View Post
Hi, just read ur update. I have a 4.7 v8 Sept 05 grand Cherokee with service 4wd system
Since the n23 recall. I take it they have come up with a new software update to fix the original recall update which has been causing this fault to loads of jeeps? They keep denying it to me??

Thanks Steve


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I had to specifically ask for the TSB to be performed. It is not a recall & they consider it a "Software Update" even though it's the same software as the N23 recall... they just modified the procedure to perform the update to keep the DTC from being stored & shutting down the 4WD system. Mine is still working BTW.

I now have to deal with Chrysler to repay me the $170. It wasn't that much... but it's the principle. This was caused by the recall procedure... they should cover fixing it.
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Old 11-16-2014, 08:45 PM
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Re: Service 4wd system

I was wondering if people were still having issues with this. I took mine in a while back to get the code reversed. Worked for a while, now back to the old "service 4low". Guess I will have to make another trip



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Old 11-17-2014, 04:19 AM
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Re: Service 4wd system

Quote:
Originally Posted by Furyous68 View Post
I had to specifically ask for the TSB to be performed. It is not a recall & they consider it a "Software Update" even though it's the same software as the N23 recall... they just modified the procedure to perform the update to keep the DTC from being stored & shutting down the 4WD system. Mine is still working BTW.

I now have to deal with Chrysler to repay me the $170. It wasn't that much... but it's the principle. This was caused by the recall procedure... they should cover fixing it.

Thanks Furyous68. I'll ring them today and see what they deny today lol

Steve


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Old 11-17-2014, 06:47 AM
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Re: Service 4wd system

Hi, just rang jeep hq. They still unhelpful saying they no nothing about any faults just take it to a dealer because they will know more than them? Will not let me speak to a manager or their tec dept. I'm still the only one in the uk to complain about the N23 nightmare apparently....

I mentioned there's thousands over the Internet and I was told "anyone can put what they want on the Internet. Doesn't make it true". This from their customer care centre. Great 😔😔


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  #12  
Old 11-17-2014, 06:53 AM
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Re: Service 4wd system

I've just done the fuse thing and hay presto 4wd low working again. I guess this is just a temp solution. Gona still have to put my hand in my pocket to pay for the tab update no doubt.



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