Jeep Garage  - Jeep Forum banner

81 - 91 of 91 Posts

·
Registered
Joined
·
49 Posts
My transmission started being rough after they updated it during the last recall for the shifter thing. Has anybody started having issues after that too? What should I do since my powertrain warranty runs out in like 2000km
 

·
Registered
Joined
·
108 Posts
Took it in and my notes say:

1) Replaced the PCM due to internet failure causing internal damage in the PCM while doing the recall for the shifter. The service adviser said they replaced it because they ran diagnostics on it and it was failing. The notes say otherwise. So not sure who is right here.

2) They did the recall.

3) They did the relearn. Notes said something about the shift points being at zero and now they are at 10.

Haven't felt anything so hopefully that solved my problem.
 

·
Registered
Joined
·
49 Posts
Brother you got off easy! My local dealer was updating a GC a few weeks back and a power surge fried the laptop and I believe over 15 modules in the car. They had to write off the car through insurance and scrap it after 3 weeks of trying to fix it...customer ended up getting a new GC lol
 

·
Registered
Joined
·
108 Posts
Took it to the dealership and they are going to put a new valve body in it. Maybe some type of solenoid.

Unfortunately, it is on back order right now.... awesome...

I am going to guess I will be back eventually based on everyone else's responses.
 

·
Registered
Joined
·
108 Posts
New valve body in. Took them a week and a half. I think it is actually worse now but I am going to give it a week. Maybe it needs to learn how I drive again.

I called them to let them know this morning after driving it for 10 minutes. They said if it didn't go away by Monday, bring it back in and they will put a new transmission in.
 

·
Registered
Joined
·
149 Posts
Just thought i'd drop in here as it appears I have the same issues as a few of you guys with the 1-2-3 trans up/down shift quality.

MY15 Ecodiesel, noticed from day one it has poor shifting in the lower gears, it's been in and out of the dealer countless time, latest TSB's, new driveshafts, new transmission and nothing solves it. Latest (last week) was to replace the oil in the transfer case, clearly that wasn't going to solve anything and it hasn't, i've now been asked to run it in snow mode.

Believe it or not, running it in snow mode did feel better this morning but, it locks out first so it's limiting the issue to 2-3 3-2 changes, it also appears to hold the gears longer, therefore masking the poor shift quality.

There is a definite relation between trans temp and shift quality too, I notice with mine after its been sitting overnight, the trans temp is already around 24 degrees C (75F) on startup despite overnight ambient temps being < 12C (53F). It also takes a long time to reach what I believe is a decent operating temp of 80C + (176F). Once it's at a high temp the 123 shifting in better, but certainly not 100%.

If you have google around, you will find Ram and some 300C owners reporting exactly the same problem, I haven't found owners of other brands with the same trans reporting this issue but I haven't searched extensively for them.

In my view, the issue lies in the programming of the trans computer, possibly in the torque converter lock up clutch area and this theory is supported by when the dealer resets my trans computer to factory spec, I get it back and it shifts OK but after a few days, goes back to it's old habits.

The area manager for service in my state has a diesel 8spd and has driven mine and says his does the same therefore, they are all like that. It's really pissing me off now, i've had a Jeep case manager for months and been told this area manager says nothing can be done, it's apparently not normal for an owner to talk to this area manager and he has the final say. I can't drive another GC to give my opinion as they won't give me one.


In Summary, there is no doubt we have an issue with our transmissions and we are all going through the same run around with FCA, i'm still pushing FCA down here in Aus but I think i'm being blocked by the area managers finding now, maybe if the much larger USA market pushes FCA, something will get done?
 

·
Registered
Joined
·
108 Posts
Is it a slim chance a new TSB comes out for shift quality?

I would love to lift/mod my jeep, but don't want to do so with this nagging transmission issue.
 

·
Registered
Joined
·
149 Posts
Hi Hillman, I have had the S49 TSB applied to my MY15 a few months back. It has changed the non linear/laggy throttle and improved the shifting, certainly not perfect but it is acceptable.
 

·
Registered
Joined
·
108 Posts
Hi Hillman, I have had the S49 TSB applied to my MY15 a few months back. It has changed the non linear/laggy throttle and improved the shifting, certainly not perfect but it is acceptable.
Thanks, I also had the recall, mine is better than when i first purchased it. But certainly not perfect as you also said.

I am hoping another transmission shifting quality TSB will come out in the future. It appears they come out for the other years/engines. Just hope a diesel transmission tune will come out eventually.
 

·
Registered
Joined
·
10 Posts
Read my sad Story !:rolleyes:

ihave issue From 3rd to 4th gear its like there is a gap or hard shifting (not in manual mod) and the dealership filled to solve the problem and in every time they Reprogram it and update it and ican not find any difference ! and iget bored and the warranty period has expired :(


2015 limeted Grand Cherokee Hemi 5.7
 

·
Registered
Joined
·
149 Posts
Read my sad Story !:rolleyes:

ihave issue From 3rd to 4th gear its like there is a gap or hard shifting (not in manual mod) and the dealership filled to solve the problem and in every time they Reprogram it and update it and ican not find any difference ! and iget bored and the warranty period has expired :(


2015 limeted Grand Cherokee Hemi 5.7
As you logged the issue within warranty and they have failed to solve it, they are still liable for the repair, I'd keep onto them and get onto FCA customer care mate.
 
81 - 91 of 91 Posts
Top