CVT Overheats - Jeep Patriot Forums
Engine and Drivetrain Engines, transfer cases, transmissions and axles

 1Likes
Reply
 
LinkBack Thread Tools Display Modes
post #1 of 23 (permalink) Old 12-29-2016, 09:43 PM Thread Starter
Junior Member
 
Join Date: Dec 2016
Posts: 17
 
CVT Overheats

Son bought a Patriot 4x4 with a CVT a month ago. On a 2 hour trip the warning light came in and went into limp mode. The shops around here all say dealer only. Is there a chance it might be something simple or is the tranny shot?
Mrkeys is offline  
Sponsored Links
Advertisement
 
post #2 of 23 (permalink) Old 12-29-2016, 11:36 PM
Senior Member
 
griff's Avatar
 
Join Date: Mar 2014
Location: Sanford NC
Posts: 590
 
I doubt it's shot....
What's the mileage?

Is the right amount of fluid in there? (it could behave as described with too little OR too much cvt fluid in it)

Has the fluid ever been changed? (if not, it probably needs it now anyway after heating up)

Did it operate normally again after it cooled down?

Did it give an error code?

It's dealer only because the shops you asked don't know what to do. Many have had their cvt checked/serviced at a transmission shop instead of the stealership.

Search this site for threads on cvt limp mode.

griff is offline  
post #3 of 23 (permalink) Old 12-30-2016, 09:38 AM
Senior Member
 
Join Date: Jul 2011
Location: Mopar World Headquarters, Michigan
Posts: 922
 
Quote:
Originally Posted by Mrkeys View Post
Son bought a Patriot 4x4 with a CVT a month ago. On a 2 hour trip the warning light came in and went into limp mode. The shops around here all say dealer only. Is there a chance it might be something simple or is the tranny shot?
Hi Mrkeys,

Sorry to hear about this! If you decide to visit your local dealership I'd be happy to follow up with them for you if needed. Just PM our page with your VIN and let me know.

Andrea
Jeep Social Care Specialist
JeepCares is offline  
 
post #4 of 23 (permalink) Old 12-30-2016, 06:37 PM
Junior Member
 
Join Date: Dec 2016
Posts: 12
 
Garage
I have a 2015 Patriot "4x4" with FDII and CVT Trans. I Just got it back from the dealer for this reason. Both times that I've been on the 15 fwy in SoCal, the CVT overheated. Starts with a whine, then the light comes one, then you loose power to the car and have to pull over and wait for it to cool. This is a self-protect feature for the trans but it is sooooooooooo un-safe because you suddenly have to negotiate crossing over 4 lanes of highway with a limping car; there should be a lawsuit against Chrysler for this...... but anyway. I got it back and the dealer said the CVT was overfilled with fluid. This are their notes:

Unable to verify overheat concern. trans is overfilled. Scanned modules not DTC's. Fluid is at 60mm at 110 degrees.
set to 30mm at 180 degrees. road tested 3 miles all shifts normal. trans operates as designed.


So, if this is to be believed, the trans was severely over-filled based on the graphs(attached). I'll have to see how it does but from what I've been reading, this is common for these Jatco CTV transmisions; we might all be f!@*&.
Attached Thumbnails
Click image for larger version

Name:	CVTFillGraph.jpg
Views:	118
Size:	36.4 KB
ID:	70378  
bob15 is offline  
post #5 of 23 (permalink) Old 12-30-2016, 08:25 PM Thread Starter
Junior Member
 
Join Date: Dec 2016
Posts: 17
 
Thanks everyone! It has 184000 miles. It works fine after cooling down. Having a mechanic friend scan for codes tomorrow. Is that chart for a 2.4 4 wheel drive? How do you know the fluid temp??? I bought a dipstick at Oreilly's. Have no idea if the fluid has ever been changed.
Mrkeys is offline  
post #6 of 23 (permalink) Old 12-30-2016, 08:52 PM Thread Starter
Junior Member
 
Join Date: Dec 2016
Posts: 17
 
And just to verify, run through the gears and then check while it is running in drive?
Mrkeys is offline  
post #7 of 23 (permalink) Old 12-30-2016, 09:02 PM
Senior Member
 
griff's Avatar
 
Join Date: Mar 2014
Location: Sanford NC
Posts: 590
 
Quote:
Originally Posted by Mrkeys View Post
Thanks everyone! It has 184000 miles. It works fine after cooling down. Having a mechanic friend scan for codes tomorrow. Is that chart for a 2.4 4 wheel drive? How do you know the fluid temp??? I bought a dipstick at Oreilly's. Have no idea if the fluid has ever been changed.
I'm going to say that since it had overheated, it would be a good Idea to change it. That chart is good for all Patriot cvt transmissions....but since we don't know the temp I fill mine to 35mm while at outside temp of about 70-75 degrees. If you'' notice, 35mm is in the acceptable range at any temp.

Dealer will charge you $2-300 to change the cvt fluid.....if you want to do it yourself you can spend about $75....you can use Valvoline cvt fluid from Autozone or where ever, it doesn't have to be mopar fluid.

check these threads....and good luck!

Transmission Service - Purchasing own fluid

Transmission temperature warning light

griff is offline  
post #8 of 23 (permalink) Old 12-30-2016, 09:03 PM
Senior Member
 
griff's Avatar
 
Join Date: Mar 2014
Location: Sanford NC
Posts: 590
 
Quote:
Originally Posted by Mrkeys View Post
And just to verify, run through the gears and then check while it is running in drive?
Yes..........

griff is offline  
post #9 of 23 (permalink) Old 12-31-2016, 11:17 AM Thread Starter
Junior Member
 
Join Date: Dec 2016
Posts: 17
 
Ok I goggled extensively. How many quarts for a regular fluid change? Getting conflicting information.
Mrkeys is offline  
post #10 of 23 (permalink) Old 12-31-2016, 12:03 PM
Senior Member
 
griff's Avatar
 
Join Date: Mar 2014
Location: Sanford NC
Posts: 590
 
Quote:
Originally Posted by Mrkeys View Post
Ok I goggled extensively. How many quarts for a regular fluid change? Getting conflicting information.
Best I can tell you is 4-6....some said they drained 6....I only got 4 but I pumped mine out through the filler tube with a cheap hand pump.
The main thing is, drain it and fill it back to aprx 38 or so mm at a low temp, before the fluid has time to heat up.

griff is offline  
post #11 of 23 (permalink) Old 01-01-2017, 08:38 AM Thread Starter
Junior Member
 
Join Date: Dec 2016
Posts: 17
 
Fluid level is fine. Still has a green tint and looks like it was just poured from a new bottle.Mechanic scanned and there were multiple codes pointing to a brake switch and tranny overheating. Plan is to add a tranny cooler. The brake switch might be linked to a cruise control/esp problem it has. Both are cheap. Found out the first tranny had been replaced at 38,xxx miles.
Mrkeys is offline  
post #12 of 23 (permalink) Old 01-02-2017, 03:22 AM
Junior Member
 
Join Date: Dec 2016
Posts: 12
 
Garage
As I previously mentioned, my CVT overheaded twice while on the 15 fwy in socal. The dealer checked it fluid level and it was grossly over-filled. Today, I decided to try to reproduce the issue and I'm happy to report that the issue did not occur today. It was much colder today than the day when the CVT overheaded but I think it was still a good test. Hopefully, I won't be having more problems with mine. Good luck on yours!
bob15 is offline  
post #13 of 23 (permalink) Old 01-02-2017, 11:45 AM Thread Starter
Junior Member
 
Join Date: Dec 2016
Posts: 17
 
Thanks! Glad it was a simple fix. Plan "B" or "C" is to drive an hour to the jeep dealer, wait 2-3 hours, give them $100+ for a diagnosis that might be correct, drive an hour home.
Mrkeys is offline  
post #14 of 23 (permalink) Old 01-02-2017, 03:24 PM
Senior Member

 
Ignatz's Avatar
 
Join Date: May 2009
Location: NH
Posts: 4,841
  
Garage
My CVT has never acted like yours but when it gets hot around here in the summer (90F) my CVT tends to whine/hum a little, but that's only a few days in the summer. I suspect it gets hotter in SoCal or NC. My first CVT failed at 110,000. I've got more than that on my replacement and no problems.

If this is happening to you I think the tranny cooler is a good idea. Its a lot cheaper than a new tranny.

PS. I like my CVT and would buy another . . . if only I could.
RossoRacer likes this.
Ignatz is offline  
post #15 of 23 (permalink) Old 01-03-2017, 04:08 PM Thread Starter
Junior Member
 
Join Date: Dec 2016
Posts: 17
 
Would be nice to have a temp gauge for the cvt. Wonder if anyone has figured out an easy way to do this??
Mrkeys is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Jeep Patriot 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
Display Modes
Linear Mode Linear Mode



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

 
For the best viewing experience please update your browser to Google Chrome