TPMS Question - Jeep Wrangler Forum
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > JK Jeep Wrangler Forum > JK Tech Forum

Join Wrangler Forum Today


Reply
 
Thread Tools

Please support our sponsors and let them know you heard about them on WranglerForum.com
Old 11-03-2019, 11:52 AM
Thread Starter
  #1
Supporting Member

5-Year WF Supporting Member
 
SwiftFF5's Avatar
 
Join Date: Jan 2019
Location: Central Virginia
Posts: 196
TPMS Question

One of the first things that I did, after buying my 2015 JKUR back in January, was to reduce the tire pressure based on the advice here. I used OBD Jscan to reset the alarm threshold to 26 pounds and all was good until this weekend. Now, I am getting the TPMS warning light, and the error message to "inflate to 37 psi".


I went back and checked and the limits are still at 26 pounds, and all four sensors are showing the correct amount of pressure (32 psi), which is above the limit, so I am not sure why I am getting the light.



I tried using OBD JScan to clear the TPMS code and it seems to persist.


Any ideas? Thanks!

__________________
2015 Wrangler Unlimited Rubicon Baja Yellow
SwiftFF5 is offline   Quote
Old 11-03-2019, 06:44 PM   #2
Supporting Member

5-Year WF Supporting Member
 
RoadiJeff's Avatar
 
Join Date: Dec 2012
Location: St. Louis, MO
Posts: 6,857
Are the tires still stock size? What psi does it say on the door jamb sticker to inflate them? Mine is a 2013 and it specifies 35 psi all around, which is what I keep them at. I had to fire up the air compressor earlier today because of the cold weather, which causes the tire pressure to go down.

RoadiJeff is offline   Quote
Old 11-04-2019, 06:57 AM   #3
Jeeper
 
Starwarsobio's Avatar
 
Join Date: Aug 2019
Posts: 106
Yup cold air makes low tire pressure. Lots of people to our shop with their light on. Also sensors themselves aren’t 100% accurate regardless what you tell the pcm
Starwarsobio is offline   Quote
Sponsored Links
Advertisement
 
Old 11-04-2019, 08:44 AM
Thread Starter
  #4
Supporting Member

5-Year WF Supporting Member
 
SwiftFF5's Avatar
 
Join Date: Jan 2019
Location: Central Virginia
Posts: 196
Thanks guys.



35" tires.



I thought it might be the cold snap, but the sensors are giving me accurate numbers (as in the pressure the tires are actually set to), which is well above the limits set by OBD JScan. That is why I am confused. This has been fine since February, and now something has changed.
__________________
2015 Wrangler Unlimited Rubicon Baja Yellow
SwiftFF5 is offline   Quote
Old 11-04-2019, 06:20 PM   #5
Jeeper
 
Join Date: Jul 2018
Posts: 309
I think JScan might have a problem. When I got 35s with new TPMS sensors it took a little while to connect, but they finally did. Like 2 weeks later I'm getting low tire pressure alert despite me changing my threshold like you did. Kinda pissed I spent money on new TPMS sensors for new wheels and tires while I drive around with low tire pressure light on. Haven't gotten around to tinkering with it, or if I'm just going to turn it off - if that even works. It took a number of tries on Jscan to reset when I regeared, which was real fun trying to get my jeep home jumping into limp mode until it finally took... not happy with Jscan other than the price.
JeepJeepBeepBeep is offline   Quote
Old 11-05-2019, 08:36 AM
Thread Starter
  #6
Supporting Member

5-Year WF Supporting Member
 
SwiftFF5's Avatar
 
Join Date: Jan 2019
Location: Central Virginia
Posts: 196
@JeepJeepBeepBeep - I wondered about that. I may try to contact the OBD Jscan developer to hear his thoughts. From my reading here, he does seem to respond quickly. Good idea, thanks.

__________________
2015 Wrangler Unlimited Rubicon Baja Yellow
SwiftFF5 is offline   Quote
Reply

Thread Tools

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 Off
Pingbacks are Off
Refbacks are Off






All times are GMT -5. The time now is 09:14 PM.


Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2020, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.1
User Alert System provided by Advanced User Tagging v3.1.0 (Pro) - vBulletin Mods & Addons Copyright © 2020 DragonByte Technologies Ltd.
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2020 DragonByte Technologies Ltd.

Jeep®, Wrangler, Liberty, Wagoneer, Cherokee, Gladiator, Mopar and Grand Cherokee are copyrighted and trademarked to FCA US LLC.
Wranglerforum.com is not in any way associated with FCA US LLC.