Computer Reset - Jeep Commander Forums: Jeep Commander Forum
General Commander Discussion General Discussion involving the Jeep Commander goes here. If it does not fit into a more specific category below, post it here.

 
LinkBack Thread Tools Display Modes
post #1 of 8 (permalink) Old 03-18-2011, 11:10 PM Thread Starter
Junior Member
Points: 1,855, Level: 25 Points: 1,855, Level: 25 Points: 1,855, Level: 25
Level up: 55% Level up: 55% Level up: 55%
Activity: 0% Activity: 0% Activity: 0%
 
Join Date: Jan 2011
Posts: 7
Computer Reset

I saw the instructions for the computer reset on here. But my question about it is do I turn on the key then disconnect the negative or disconnect the negative then turn the key to on?

Thanks,

Pete
PJ's YJ is offline  
Sponsored Links
Advertisement
 
post #2 of 8 (permalink) Old 03-20-2011, 06:17 PM
Senior Member
Points: 15,906, Level: 81 Points: 15,906, Level: 81 Points: 15,906, Level: 81
Level up: 12% Level up: 12% Level up: 12%
Activity: 0% Activity: 0% Activity: 0%
 
Mongo's Avatar
 
Join Date: Oct 2010
Location: Lusby, MD
Posts: 3,037
Disconnect the negative battery cable and leave it disconnected for 30 minutes or more. Perhaps turning the key to on, after disconnecting the negative battery cable, would drain the capacitors faster, I really don't know.

But if you reconnect the battery cable to soon, the capacitor won't drain and the PCM won't reset.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Mongo is offline  
post #3 of 8 (permalink) Old 03-21-2011, 01:56 PM
Senior Member
Points: 8,022, Level: 60 Points: 8,022, Level: 60 Points: 8,022, Level: 60
Level up: 36% Level up: 36% Level up: 36%
Activity: 0% Activity: 0% Activity: 0%
 
Join Date: Feb 2010
Location: San Antonio, TX
Own a Commander?: Yes
Model year: 2006
Trim Package: Limited
Power-Train: 5.7L V-8 Hemi
2WD
If 4WD - system: QT-I
Posts: 378
Disconnect, then while it's disconnected try to start the Jeep two or three times while also pushing the brake pedal. So try to start it while pushing the brake pedal at the same time, let off the break, turn the key back to off, then do it again. At least twice, three times to be sure.

Connect it right back up and you'll be good to go.
Briandl is offline  
 
post #4 of 8 (permalink) Old 03-21-2011, 02:45 PM
Senior Member
Points: 15,906, Level: 81 Points: 15,906, Level: 81 Points: 15,906, Level: 81
Level up: 12% Level up: 12% Level up: 12%
Activity: 0% Activity: 0% Activity: 0%
 
Mongo's Avatar
 
Join Date: Oct 2010
Location: Lusby, MD
Posts: 3,037
So I take it you've found that doing this, drains any stored energy in the PCM that would hold the volatile memory? It makes sense, just want to confirm.

I haven't tried starting and standing on the brake pedal with the battery disconnected, and I've found if you don't wait at least 30 minutes, the volatile memory might NOT dump and thus the PCM won't reset.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Mongo is offline  
post #5 of 8 (permalink) Old 03-21-2011, 03:30 PM
Senior Member
Points: 10,542, Level: 68 Points: 10,542, Level: 68 Points: 10,542, Level: 68
Level up: 23% Level up: 23% Level up: 23%
Activity: 0% Activity: 0% Activity: 0%
 
JeepJorge's Avatar
 
Join Date: Jan 2011
Location: Rowlett, Texas
Own a Commander?: Yes
Model year: 2006
Trim Package: Limited
Power-Train: 5.7L V-8 Hemi
2WD
If 4WD - system: QD-II
Posts: 537
Quote:
Originally Posted by Mongo View Post
So I take it you've found that doing this, drains any stored energy in the PCM that would hold the volatile memory? It makes sense, just want to confirm.

I haven't tried starting and standing on the brake pedal with the battery disconnected, and I've found if you don't wait at least 30 minutes, the volatile memory might NOT dump and thus the PCM won't reset.
Is anything helped by reseting the computer? What would this procedure be recommended for? Thanks. Cheers.

2006 Limited, Light Khaki Metallic, Light Graystone/Dark Khaki Leather, HEMI, QDII, Rear DVD, REC Nav w/09 Database, woody side, EGR hood deflector, AEM Gun Metal Brute Force CAI, tilting rearview mirrors.
“I did not enter politics out of philanthropy but rather as an extension of my own annoyance at having inherited freedoms infringed by power-crazed idiots spouting gibberish”. Nigel Farage MEP; Leader, UK Independence Party
JeepJorge is offline  
post #6 of 8 (permalink) Old 03-21-2011, 08:29 PM Thread Starter
Junior Member
Points: 1,855, Level: 25 Points: 1,855, Level: 25 Points: 1,855, Level: 25
Level up: 55% Level up: 55% Level up: 55%
Activity: 0% Activity: 0% Activity: 0%
 
Join Date: Jan 2011
Posts: 7
Is anything helped by reseting the computer? What would this procedure be recommended for? Thanks. Cheers.

I baught a K&N replacement filter and noticed it was running slightly ruffer. I know that resetting the compluter will help it run better do to the amount of more air entering the intake. So thats why I asked.

Thanks guys!
PJ's YJ is offline  
post #7 of 8 (permalink) Old 03-21-2011, 09:06 PM
Moderator
Points: 10,821, Level: 68 Points: 10,821, Level: 68 Points: 10,821, Level: 68
Level up: 93% Level up: 93% Level up: 93%
Activity: 0% Activity: 0% Activity: 0%
 
SAL-XK's Avatar
 
Join Date: Apr 2010
Location: North Carolina
Posts: 1,993
Your trying to trick the computer into relearning and adjusting its parameters for things like new plugs or CAI exhaust the dealer can put your computer in learn mode but that costs money.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Stop by and like the page

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
SAL-XK is offline  
post #8 of 8 (permalink) Old 03-21-2011, 09:12 PM
Senior Member
Points: 8,022, Level: 60 Points: 8,022, Level: 60 Points: 8,022, Level: 60
Level up: 36% Level up: 36% Level up: 36%
Activity: 0% Activity: 0% Activity: 0%
 
Join Date: Feb 2010
Location: San Antonio, TX
Own a Commander?: Yes
Model year: 2006
Trim Package: Limited
Power-Train: 5.7L V-8 Hemi
2WD
If 4WD - system: QT-I
Posts: 378
Quote:
Originally Posted by Mongo View Post
So I take it you've found that doing this, drains any stored energy in the PCM that would hold the volatile memory? It makes sense, just want to confirm.
Yes. I haven't broken it down to figure out which particular action does the trick, or if it has to be done more than once, but the whole procedure literally takes less than ten seconds so there's really no reason to make it any shorter.
Briandl is offline  
Sponsored Links
Advertisement
 
Reply

  Jeep Commander Forums: Jeep Commander Forum > Jeep Commander Discussion > General Commander Discussion

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Jeep Commander Forums: Jeep Commander Forum 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











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
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may not post new threads
You may not 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