My PTU failure experience - 2014+ Jeep Cherokee Forums
User Tag List

 4Likes
  • 2 Post By Austin
  • 2 Post By Austin
 
LinkBack Thread Tools
post #1 of 3 (permalink) Old 03-18-2017, 09:28 PM Thread Starter
Member
 
Join Date: Aug 2015
Posts: 7
My PTU failure experience

Hi Guys. I'm an aussie and have had a 2015 KL Limited Diesel for just on 2 years. I love this car as it just does so many things right. I just thought I'd share my PTU failure experience with the members to help add more "data to the cause". It may be a case of every cloud has a silver lining in the end but of course didn't seem that way at the time.

The only annoyance I experienced in the past 2 years of basically happy motoring was just a small warranty issue with a seat belt chime that was quickly rectified. Having read all the posts and previous experiences I was resigned to the fact that the car had idiosyncrasies in the lower gear changes which I also noted. ie choppy and jerky 1-2-3 gear shifts. Annoying in slow speed crawling traffic but certainly liveable. All the little TSBs and recalls were attended to even though my servicing dealer is over 100 km away. They have been excellent to deal with and we have a good relationship.

I now have 33,000 km on the dial and about 4 or 5 weeks back noted that the 1-2-3 changes that were previously annoying had now become quite noticeable and pronounced. the vehicle was serviced in that time, and this was reported to the dealership but the codes all came back fine. There was no noise nor any warning lights etc. The PTU failure occurred 3 weeks ago as I was driving at low speed in the main street of town. Again no warning noises, no warning lights just a loud clunk, a failure to engage any gear and grnding when attempting to engage park or drive. Here I am immobilized in the middle of a main highway in town in what looked to most passers by as a poor attempt at a double park! Quite embarrassing during the ensuing 2.5 hours waiting for a tow after contacting Jeep assist. lots of the expected abuse from passing motorists trying to avoid my obstruction etc. Unfortunately I was in a spot where it was impossible to move (you had to be there to explain I guess).

Eventually the vehicle was taken to the servicing dealer by flat bed tow and the obligatory codes were run. We both expected to chalk another one up to a ZF tranny failure, in fact the service department were so confident they had placed an order for one whilst the car was in transit to them. They're usually on the ball in that regard. The report came back with mildly surprising codes indicating a PTU failure and mechanics found they were able to engage 4x4 but not front wheels, therefore not a tranny issue. The PTU was pulled apart and found to be full of metal shavings and had basically chewed itself to bits. Fortunately for me this happened in town and not out in a remote part of the bush. I can live with the embarrassment I guess

To cut the rest shorter, FCA were quick to agree on the diagnostics and a PTU was dispatched forthwith and I was back on road in 12 days with a hire car offered and the vehicle returned to my place of work with no issue. The service department were awsome. Updates every couple of days and allowed me to physically inspect the faulty PTU etc when I called in to visit the patient. No complaints whatsoever about them or FCA. That makes a nice reassuring change after hearing so much bad about a no care attitude from some Jeep dealerships. Not this one. Since return over a week ago now I've noted the 1-2-3 changes are almost seamless! Particularly 1st to 2nd. Yippee! It appears the car is as it should have been from day 1. I've contacted the dealer to enquire as to what else had been done in the way of flashes etc but there were none and nothing was done apart from the replacement of the PTU? Whatever happened it has made the tranny a a happy camper and delight to drive at last and whilst I've lost just a little confidence in the vehicle (only for a while I hope) as a whole I'm still happy.

Just curious to know from the membership here has anyone else had a similar experience where replacing the PTU has made for a much smoother shifting tranny? Excuse my ignorance as I'm just a paramedic and fix people not cars and my mechanical knowledge is limited to things far less technical than a Cherokee. As I said maybe every cloud has a silver lining! Will report if things deteriorate or change...
NScherry and 04Freedom like this.
Austin is offline  
Sponsored Links
Advertisement
 
post #2 of 3 (permalink) Old 03-18-2017, 09:56 PM
Super Moderator
 
SkipW's Avatar
 
Join Date: Dec 2013
Location: Midcoast Maine
Posts: 6,011
Seems your dealer has made a difficult situation a lot better by being on the ball. Sorry to hear of the embarrassing breakdown, but that's all in the rear view now. I wish we heard more positive stories about care from the dealer network, I think it would do a lot for brand reputation.

Glad you have a happy transmission now. With no updates or flashes done to the TCM the change in driveability does seem a bit puzzling, but maybe the PTU was the total cause of the shifting anomalies being felt.

.
.

The best time to plant a tree was 20 years ago. The second best time is now.

http://jeepcherokeeclub.com/4-2014-j...rum-rules.html
SkipW is offline  
post #3 of 3 (permalink) Old 03-18-2017, 10:21 PM Thread Starter
Member
 
Join Date: Aug 2015
Posts: 7
Quote:
Originally Posted by SkipW View Post
Seems your dealer has made a difficult situation a lot better by being on the ball. Sorry to hear of the embarrassing breakdown, but that's all in the rear view now. I wish we heard more positive stories about care from the dealer network, I think it would do a lot for brand reputation.

Glad you have a happy transmission now. With no updates or flashes done to the TCM the change in driveability does seem a bit puzzling, but maybe the PTU was the total cause of the shifting anomalies being felt.
Maybe the PTU had something to do with the shifting but that seems odd and would require some explanation for the likes of me to understand I'm afraid. You would assume the vehicle would show up codes of some sort at service particularly after me pointing the issue out? I do trust the service department to follow stuff up.

This dealership (not the original selling dealership by the way) has been great. Small town that relies a lot on brand reputation to survive and therefore handles multiple brands such as Toyota and Subaru as well as Jeep.

Its all good now of course, the car is driving beautifully and hopefully it stays that way
Fj4080 and 04Freedom like this.
Austin is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the 2014+ Jeep Cherokee Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



  Similar Threads
Thread Thread Starter Forum Replies Last Post
PTU being replaced Ampmtnbkr2 2014+ Jeep Cherokee General Discussion 23 12-14-2016 12:31 PM
Is this the TRANS or PTU? madchemist24 Transmission Discussion 6 11-05-2016 12:04 AM
PTU needs replacing ReefAngel 2014+ Jeep Cherokee General Discussion 26 08-02-2016 06:12 PM
40,000 miles and PTU failure. MLHooper Owners' Garage 4 11-26-2015 10:04 AM
PTU Replacement cdafrost1@hotmail.com Engine and Technical Discussion 11 04-20-2015 12:25 AM

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On