Serv ESC & 4WD lights together - JeepForum.com
 2Likes
  • 1 Post By ColdCase
  • 1 Post By ColdCase
 
LinkBack Thread Tools
post #1 of 11 Old 09-01-2021, 09:25 AM Thread Starter
scottydog
Registered User
2017 WK 
 
Join Date: Jan 2005
Posts: 434
Serv ESC & 4WD lights together

Well finally got a glitch in my 17 JGC limited 4WD. Both the ESC and Serv 4WD came on the same trip. Drives like it is stuck in 4WD high. Restarted and ran several times, errors seem persistent. I even disconnected the battery to reset everything no go. I have an appointment with the dealer but maybe someone has a suggestion?


2017 JGC Limited V6
prev 2004 JGC Laredo, 2009 JGC Laredo
scottydog is offline  
Sponsored Links
Advertisement
 
post #2 of 11 Old 09-01-2021, 12:33 PM
ColdCase
My Reality Check Bounced
 
ColdCase's Avatar
2011 WK 
 
Join Date: Sep 2009
Location: New England
Posts: 18,277
A problem in the transfer case or controller will often throw multiple module codes, as ESC probably needs a working transfer case, for example. It will complain when it gets nothing from the transfer case controller. You need to check the DTCs buried in the modules to have a clue, however.
scottydog likes this.

I just got lost in thought. It was unfamiliar territory;
Current: 2011 Grand Cherokee Overland V8, 2009 Liberty Rocky Mt V6
Previous: 2000 Grand Cherokee Laredo I6, 1979 CJ7 I6 Quadratrac
ColdCase is offline  
post #3 of 11 Old 09-01-2021, 01:44 PM Thread Starter
scottydog
Registered User
2017 WK 
 
Join Date: Jan 2005
Posts: 434
Makes sense. I have a feeling the trouble involves the transfer case, as I just checked and 4wlo is not functional. Thanks for the advice.

2017 JGC Limited V6
prev 2004 JGC Laredo, 2009 JGC Laredo
scottydog is offline  
 
post #4 of 11 Old 09-01-2021, 03:25 PM
ColdCase
My Reality Check Bounced
 
ColdCase's Avatar
2011 WK 
 
Join Date: Sep 2009
Location: New England
Posts: 18,277
This long thread indexed in the maintenance/repair sticky, may provide some info on what to expect.

https://www.jeepforum.com/forum/f309...dated-4438379/
scottydog likes this.

I just got lost in thought. It was unfamiliar territory;
Current: 2011 Grand Cherokee Overland V8, 2009 Liberty Rocky Mt V6
Previous: 2000 Grand Cherokee Laredo I6, 1979 CJ7 I6 Quadratrac
ColdCase is offline  
post #5 of 11 Old 09-02-2021, 08:19 AM Thread Starter
scottydog
Registered User
2017 WK 
 
Join Date: Jan 2005
Posts: 434
Thanks for the link Coldcase. Lots of helpful info. Seems I'm looking at maybe $500 plus labor for actuator motor and DTCM on the first go around. The vehicle is 4 years old with 63k miles. If I get lucky maybe FCA will cut me some slack.

2017 JGC Limited V6
prev 2004 JGC Laredo, 2009 JGC Laredo
scottydog is offline  
post #6 of 11 Old 09-13-2021, 04:52 PM Thread Starter
scottydog
Registered User
2017 WK 
 
Join Date: Jan 2005
Posts: 434
Well I finally got a DTC scan. "actuator out of sync". TC seems ok. The service manager quoted the service manual decision tree they want to replace the actuator first, then new DTCM if error doesn't clear. $300 labor $800 actuator . At least they didn't say replace TC/actuator/DTCM like some I've read about.

Cross my fingers this fixes the problem. Thanks again Jeepforum/coldcase

2017 JGC Limited V6
prev 2004 JGC Laredo, 2009 JGC Laredo
scottydog is offline  
post #7 of 11 Old 09-13-2021, 06:03 PM
jwolfegc
Registered User
 
Join Date: Sep 2021
Posts: 17
Garage
Do you regularly go off-road with yours ? The main cause of this I read is irregular or mismatched tires ie replacing only 1 or 2 tires - pretty sure the manual says you have to replace all 4 if 1 goes flat/bad


Sent from my iPhone using Tapatalk
jwolfegc is offline  
post #8 of 11 Old 09-13-2021, 06:44 PM
ColdCase
My Reality Check Bounced
 
ColdCase's Avatar
2011 WK 
 
Join Date: Sep 2009
Location: New England
Posts: 18,277
Quote:
Originally Posted by scottydog View Post
Well I finally got a DTC scan. "actuator out of sync". TC seems ok. The service manager quoted the service manual decision tree they want to replace the actuator first, then new DTCM if error doesn't clear. $300 labor $800 actuator . At least they didn't say replace TC/actuator/DTCM like some I've read about.

Cross my fingers this fixes the problem. Thanks again Jeepforum/coldcase
Did they give you a DTC number. actuator out of sync doesn't ring a bell.

If the TC is defective, the typical shop sequence is to try replacing the motor (AKA actuator) and controller first as those are less money. If that fails to fix, then the TC.

Prices for replacement part have gone through the roof, if you can get them. The actuator lists for $800, which is what a dealer or shop would charge. You can get it at discount for $570.

I just got lost in thought. It was unfamiliar territory;
Current: 2011 Grand Cherokee Overland V8, 2009 Liberty Rocky Mt V6
Previous: 2000 Grand Cherokee Laredo I6, 1979 CJ7 I6 Quadratrac
ColdCase is offline  
post #9 of 11 Old 09-13-2021, 07:10 PM Thread Starter
scottydog
Registered User
2017 WK 
 
Join Date: Jan 2005
Posts: 434
Quote:
Originally Posted by jwolfegc View Post
Do you regularly go off-road with yours ? The main cause of this I read is irregular or mismatched tires ie replacing only 1 or 2 tires - pretty sure the manual says you have to replace all 4 if 1 goes flat/bad
The vehicle has never been off road, occ 4WDH in the Denver snow. I'm on my second set of all season tires. only 63k miles.

2017 JGC Limited V6
prev 2004 JGC Laredo, 2009 JGC Laredo
scottydog is offline  
post #10 of 11 Old 09-13-2021, 07:28 PM Thread Starter
scottydog
Registered User
2017 WK 
 
Join Date: Jan 2005
Posts: 434
Quote:
Originally Posted by ColdCase View Post
Did they give you a DTC number. actuator out of sync doesn't ring a bell.

If the TC is defective, the typical shop sequence is to try replacing the motor (AKA actuator) and controller first as those are less money. If that fails to fix, then the TC.

Prices for replacement part have gone through the roof, if you can get them. The actuator lists for $800, which is what a dealer or shop would charge. You can get it at discount for $570.
No DTC #. The mechanic did say the TC had no unusual noises but I guess we will see.

Speaking of parts shortages the dealer had only one gladiator that had $15k ADM, no other new Jeeps, 4-5 used cars. A salesman said all sales are orders, delivery in 3-4 months. GM cars are even worse. He thinks the industry is taking advantage of not having to carry inventory.

2017 JGC Limited V6
prev 2004 JGC Laredo, 2009 JGC Laredo
scottydog is offline  
post #11 of 11 Old 10-22-2021, 04:51 PM Thread Starter
scottydog
Registered User
2017 WK 
 
Join Date: Jan 2005
Posts: 434
Update on the TC saga. The Jeep dealer mechanic got an error code on the transfer case position sensor. Inspection of the sensor found a failed seal. They replaced the sensor, but errors persisted. Decision tree said replace the TC & DTCM. They elected to order/replace the DTCM only. So far back to normal! $800 total bill. The dealer earned a glowing Yelp review.



Many thanks to coldcase et al for knowledge & support.

2017 JGC Limited V6
prev 2004 JGC Laredo, 2009 JGC Laredo
scottydog is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the JeepForum.com 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 e-mail address for yourself.



Email Address:
OR

Log-in











Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



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 Off
Pingbacks are On
Refbacks are On

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