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The dealer performed the N23 recall 2 months ago when it was in for an oil change. Of course I get a foot of snow dumped on me last week....and I get the '4WD service needed ' message when I tried to get into 4LO. Check out the problem on line, find out I'm not the only one. Called the dealer and I get the "Never heard of that happening" reply. I know it worked before, I put it into 4LO about once a month to make sure everything still works. So here I sit at the dealer, wish me luck.
 

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You need to print out the threads on forums everywhere about this problem, then drop the resulting ream of paper on the dealer's desk next time in. Maybe the 5 lbs. of paper whamming down on the desk will wake them up!!

I love the way that works. Even in the radio business, it's the same crap. I won't mention any names here, but an Indian casino who uses HUNDREDS of 2-way radios in their system, from security guards to maintenance men, bought about 50 new radios. They're a new model, and suddenly we're getting dozens back with cracked cases. I won't mention the brand.

Call the manufacturer, they deny-deny-deny there's a problem, and we're the ONLY dealer who's EVER had that happen to. When we try to order new case assemblies, they're back ordered for months. Maybe, just MAYBE because there are dealers all over the USA with the same problem ordering new case assemblies?!? Say it ain't so.

Chrysler execs will deny to their graves there's anything remotely related to sudden $800 controller failures right after the update, despite Jeep owners everywhere having problems within like 5 minutes of said updates.
 

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When I went in and told the service writer what was wrong, I kinda got that 'whatever nutcase' smirk. Two hours later I'm told this was a problem that she didn't know about, it'll be covered, but there are no parts available to fix it. They'll call when the parts come in. If I'd known it was going to take two hours, I would of gotten my oil changed while I was there! So good news, to bad it took all morning.
 

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Two months later, the new motor finally arrives. It was put in today, and everything seems to be back to normal. What a pain in the butt!
 

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service 4WD fix

Need to try this It works
This is what worked for me after getting the n23 recall and getting the dreaded service 4wd system error when I try put it in low.

1. Turned my car on (engine running) checked that the 4wd service message was still occurring when I activated the low 4wd)

2. turned my car off keys out. opened the bonnet.

3. Went to the fuse box under the bonnet took fuse labelled fdcm/ediff

4.Shut bonnet, got in my car, started it with the fuse out put it in drive, drove 2 meters forward then put it in reverse drove 2 meters backwards. (Be aware you will get the service 4wd light without pulling up the lever as you are driving)

5. Turned my car off keys out went to the bonnet put fuse back in shut bonnet

6. Started my car put it in drive got the car rolling just below 5 mph (as this makes it easier to slip into low 4wd read manual) placed it into neutral while rolling activated the low 4wd switch and it worked!
 

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hello, i get the N23 recall also for my 3.0 crd jeep....

I recently tuned the chip of my diesel car to get more power and torque thanks to the electronic tuning...if i update the FDMC software it ll mess up with the tuned chip???

thanks
 

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hello, i get the N23 recall also for my 3.0 crd jeep....

I recently tuned the chip of my diesel car to get more power and torque thanks to the electronic tuning...if i update the FDMC software it ll mess up with the tuned chip???

thanks
You will have to put your Commander back to stock tune before you have the recall done. Then put your custom tune back after the recall.
 

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You will have to put your Commander back to stock tune before you have the recall done. Then put your custom tune back after the recall.
Thanks for the advice!! But in your opinion is really necessary for me to do the recall N23 ?
I ask you that cause the place where i did the module tuning is far from where i live and ll be complicated....

Thanks
 

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Thanks for the advice!! But in your opinion is really necessary for me to do the recall N23 ?
I ask you that cause the place where i did the module tuning is far from where i live and ll be complicated....

Thanks
I have not had the recall done on my Commander because of the problems it has been causing everyone that has had it done.
 

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I have not had it done to mine nor will I go to the dealer unless I know that the problem is fixed, but I do not have remote start.
 

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Do not have the recall performed!!!
 

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I have not had the recall done on my Commander because of the problems it has been causing everyone that has had it done.
thats perfect :D

Thanks for all the information...i ll not do it on mine neither cause is too much
trouble for me to do...

If is not necessary for my jeep i ll skip it.

Thanks again
 

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A big thank you

This worked for me. Anyone having the Service 4WD system error should try this first.


QUOTE=doubleeagle;292793]Need to try this It works
This is what worked for me after getting the n23 recall and getting the dreaded service 4wd system error when I try put it in low.

1. Turned my car on (engine running) checked that the 4wd service message was still occurring when I activated the low 4wd)

2. turned my car off keys out. opened the bonnet.

3. Went to the fuse box under the bonnet took fuse labelled fdcm/ediff

4.Shut bonnet, got in my car, started it with the fuse out put it in drive, drove 2 meters forward then put it in reverse drove 2 meters backwards. (Be aware you will get the service 4wd light without pulling up the lever as you are driving)

5. Turned my car off keys out went to the bonnet put fuse back in shut bonnet

6. Started my car put it in drive got the car rolling just below 5 mph (as this makes it easier to slip into low 4wd read manual) placed it into neutral while rolling activated the low 4wd switch and it worked![/QUOTE]
 

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This worked for me. Anyone having the Service 4WD system error should try this first.


QUOTE=doubleeagle;292793]Need to try this It works
This is what worked for me after getting the n23 recall and getting the dreaded service 4wd system error when I try put it in low.

1. Turned my car on (engine running) checked that the 4wd service message was still occurring when I activated the low 4wd)

2. turned my car off keys out. opened the bonnet.

3. Went to the fuse box under the bonnet took fuse labelled fdcm/ediff

4.Shut bonnet, got in my car, started it with the fuse out put it in drive, drove 2 meters forward then put it in reverse drove 2 meters backwards. (Be aware you will get the service 4wd light without pulling up the lever as you are driving)

5. Turned my car off keys out went to the bonnet put fuse back in shut bonnet

6. Started my car put it in drive got the car rolling just below 5 mph (as this makes it easier to slip into low 4wd read manual) placed it into neutral while rolling activated the low 4wd switch and it worked!
This is old news, Torpedo. Also it has been determined that this is only a temporary fix and the losing 4Lo problem will come back. Chrysler has a new recall flash that is supposed to fix the problem.
 

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Went to the dealer armed with TSB for proper steps to perform recall. The service writer told me that he wouldn't do the recall if it were his Jeep. So I took his advice... I did have a new key that I purchased that I needed programmed as 1 of my keys went bad, and you cant program it yourself unless you have 2 good keys. They wound up cutting a 3rd key by mistake and then said they would sell to me at cost but would not program it. I passed and as I was leaving they handed me the un-programmed key and said they couldn't use it. I went home and programmed the 3rd key, so I actually got a $200 key free out of it.
 

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I had a key that lost memory somehow and was able to restore it key because i had another. very simple.
 

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My 07 had the N23 recall done before I bought it. The service 4wd light does come on now. I took it back to the dealer and they told me it would cost around $1100 to fix this. I told them about the reflash and they said my vehicle was out of warranty so no TSB would be performed.
I called Mike Macdonald at Jeep Headquarters and he called the dealership- tomorrow I will take it in for the new 07/29/14 FDCM reflash that is supposed to fix this problem.
I will let everyone know if this works.
 

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Took the Jeep in to the dealership today and they did the 7-29-14 reflash and the 4lo is working now. I cycled it 3 times today and it seems to be working ok so far.
 

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Took the Jeep in to the dealership today and they did the 7-29-14 reflash and the 4lo is working now. I cycled it 3 times today and it seems to be working ok so far.
That's good news! I had my reflash performed on 7/31 and my 4 low is still working.
 

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I cycled the 4lo 2x this am on the way to the office So far so good. I plan to keep trying it everyday for the next week just to make sure.
 
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