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post #41 of 53 (permalink) Old 11-11-2015, 01:06 PM
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oh ok
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post #42 of 53 (permalink) Old 11-11-2015, 01:19 PM Thread Starter
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Quote:
Originally Posted by Mark_ View Post
Huh ?

Sport Mode : was brought up to rule out the newly high upshift points. No Sport Mode reported by OP so not a factor here.
I don't think anyone has linked tire pressure to Sport Mode here, have they ? If soa I missed it. OP brought up tire pressure in anticipation of someone asking if the tires had enough air (could have been a factor for worse mileage).

Wrong oil ? That's a loooooong shot, especially since it wouldn't cause what the OP described as higher shift points.
Perfectly said. Thank you!

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post #43 of 53 (permalink) Old 11-11-2015, 02:12 PM
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That makes sense, thanks for the info.

Curious about your non R01 eligibility : do you have one of those really early 2013 builds ?
I have a 12/11/13 build. Only one TCM/PCM update required to date.
So it may still show up at some point in time.
In the discussion I had with the dealer last year about the RO1 and other TSBs he basically said if they are not listed as required they will not do them.
That is unless there are issues directly related to the TSB is listed for.
His opinion was if everything is working properly you run the risk of screwing up your system. Basically if I demanded a particular TSB be done, they would do it. But with one caveat only, they will not spend time trying to fix any problem it causes. Mostly because the sequence of required/needed updates was broken. On his end though, he said the dealer and FCA own that vehicle while its under warranty and basically beyond.
Also if I experience any change in shifting etc. bring it in right away.
So I defer to their judgment on this issue. My Cherokee runs fantastic and has from day one. That is after a horrible AL process for the first 800 miles or so.

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post #44 of 53 (permalink) Old 11-11-2015, 09:35 PM
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@Jeepster1,

Thanks for that.

I've only been here a little over 6 months so I've missed a lot, especially stuff concerning the earlier builds. I have read quite a few posts about builds like yours not being R01 eligible, and have also read and heard all the speculation surronding that. My salesman (good guy) told me the first builds had ZF9s from Germany, and I may have read that once or twice also. I don't think any ZF9s have been built in Germany ; South Carolina has a ZF plant, producing ZF9s for non FCA clients, and maybe the first KL ZF9s came from there instead of Indiana ? Regardless of origin, there definitely appears to be an early batch with no C-Clutch snap ring anomaly, or else they would have had R01 prescribed. But yeah the early programming must have been horrible, and I remember reading about it early on.

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post #45 of 53 (permalink) Old 11-12-2015, 05:57 AM
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@Jeepster1,

Thanks for that.

I've only been here a little over 6 months so I've missed a lot, especially stuff concerning the earlier builds. I have read quite a few posts about builds like yours not being R01 eligible, and have also read and heard all the speculation surronding that. My salesman (good guy) told me the first builds had ZF9s from Germany, and I may have read that once or twice also. I don't think any ZF9s have been built in Germany ; South Carolina has a ZF plant, producing ZF9s for non FCA clients, and maybe the first KL ZF9s came from there instead of Indiana ? Regardless of origin, there definitely appears to be an early batch with no C-Clutch snap ring anomaly, or else they would have had R01 prescribed. But yeah the early programming must have been horrible, and I remember reading about it early on.
Thanks as I have learned something about the ZF9's eligibility for the RO1
Must of missed that entire thread. Yes the problems were bad early on but I must have gotten lucky with the break in of the ZRF9.
I do know that the ZRF9 is manufactured by FCA in the US under license from ZRF. I am sure that Chrysler made some modifications in it and the software was all custom written for the Cherokee. Its a pretty complex system.
I think your analysis is correct about the snap ring as that was the main point of the RO1. That was to check the snap ring along with the PCM/TCM updates. Those updates were actually all new software.
Again thanks for the info.

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post #46 of 53 (permalink) Old 11-12-2015, 06:22 AM
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Originally Posted by COJeep303 View Post
When I did my last oil change I requested the latest TSB and they didn't even list it on my invoice, even though I specifically asked for it (and very happy with it). Additionally, anytime they do a flash I'm pretty sure it requires the Quick Learn procedure to be completed, which if I recall doesn't require a two-tech drive (could be wrong there) but does clear the adaptive learn "cells" or whatever. So if it was driving fine before you took it in, chances are that's what happened. You could always call and ask them.

Why so much hate for the updates? It's software, which needs fine tuning.
You are absolutely correct!
Most TCM updates will require the AL drive to quick set the shifting points and the AL on the whole.
The RO1 was a tough one. Everything had to be done in a particular order or there would be problems. The PCM and the TCM would be screwed up if not done correctly. At one point in the RO1 TSB it warned that if not done in this order the vehicle would not go into gear.
I had the May 2014 update done in May 2015. They did drive the vehicle a few miles to verify the shifting and that it was OK.

So as you surmised if the AL drive is not done or not done correctly there will be problems.
Now also the early builds, which I would say was through the 2014 and very early 2015's Had to have their software updated to resolve some lingering problems. But mostly to fix the AL process, That is to speed it up so it would be a quick learn and not a slow protracted learn.

I still say that the early AL (software) was causing most of the problems with the durability of the ZF. Any time that I was reading about rough shifting, jerking, and clunks I knew that was not good for the ZF and causing lots of wear.

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post #47 of 53 (permalink) Old 11-12-2015, 08:15 AM
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All I know is when I get my oil changed, I LOVE the way my Jeep drives, it's so much cleaner and works smoother, I don't follow the mpg so much but I definitely feel a difference after every oil change, sorry you didn't get the same feeling from your oil change.

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post #48 of 53 (permalink) Old 11-12-2015, 08:36 AM
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Originally Posted by JamesKuL View Post
All I know is when I get my oil changed, I LOVE the way my Jeep drives, it's so much cleaner and works smoother, I don't follow the mpg so much but I definitely feel a difference after every oil change, sorry you didn't get the same feeling from your oil change.
Funny how the mind works. I don't notice anything better, I just worry about the drain plug being on tight enough. And the filter. And whether they really did use my oil (I bring my own at the dealership) and if the tech put enough in.
Your Jeep *drives cleaner* ? You probably get a free wash...

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post #49 of 53 (permalink) Old 11-12-2015, 08:45 AM
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Haha I know for a fact they don't wash my Jeep, but they sure are quick to ask me "Oh you take your TH offroad?" It's definitely more than just my mind at work, I know my Jeep through and through (will have been driving just this and my wife's Chrokee Sport for 2 years this Dec), know exactly how it responds when I'm turning, accelerating, decelerating, how it'll "bump" when I hit a pothole or anything really. Right after an oil change I get the smoothest response time, my shifting doesn't change but I definitely feel the difference, it helps to have a good baseline, as soon as my idler pulley started squeaking (now replaced and nice and quiet again) I felt that difference too since mud and gunk had wedged in there, maybe it's my mechanic background I dunno, but it helps to know your vehicle with all its little tics and changes. I also feel when one of the tires is lower than normal.

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Last edited by JamesKuL; 11-12-2015 at 08:45 AM. Reason: a word
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post #50 of 53 (permalink) Old 11-12-2015, 09:36 AM
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Originally Posted by JamesKuL View Post
Haha I know for a fact they don't wash my Jeep, but they sure are quick to ask me "Oh you take your TH offroad?" It's definitely more than just my mind at work, I know my Jeep through and through (will have been driving just this and my wife's Chrokee Sport for 2 years this Dec), know exactly how it responds when I'm turning, accelerating, decelerating, how it'll "bump" when I hit a pothole or anything really. Right after an oil change I get the smoothest response time, my shifting doesn't change but I definitely feel the difference, it helps to have a good baseline, as soon as my idler pulley started squeaking (now replaced and nice and quiet again) I felt that difference too since mud and gunk had wedged in there, maybe it's my mechanic background I dunno, but it helps to know your vehicle with all its little tics and changes. I also feel when one of the tires is lower than normal.
Oh my gosh..you really believe that don't you. You must be our resident "Jeep Whisperer".....thanks for my morning laugh.....
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