sipafz
Caught the Bug
OBD JScan is a smart phone app that when coupled with a wireless adapter give you the ability to read trouble code and other things, like many other available apps. What makes this app different is the fact that it allows you to make changes to the ECU and save them!
I stumbled across this app the other day when another member on this site mentioned that he was able to reprogram his new tire size using this app. This sparked my curiosity and began researching the possibility.
I started by downloading the “free” app and did some browsing with some demo data stored within the app. It looked promising so I purchased a middle of the road WiFi OBDII Adapter from Amazon for $26.
A couple of days later I plugged it in and connected my iPhone 6s. Once that was completed I opened the app and learned that you have to purchase a license so you can register your VIN. This cost me $15 for a single license. Once that was settled I was able to connect to the ECU, view all the normal feedback data and get into making some changes.
I started with some simple things like one touch all doors unlock and disabling the horn report when remote locking. Now I could have done this with the dash and steering controls, but I just wanted to see how it worked. Next I wanted to take care of one of my pet peeves, the TPMS light. I keep my tires at 30psi and my light comes on at 28psi. In the winter time, my light is on the entire season so I was really excited to make this change, but when I looked closer at the app I noticed that it only supported 07 to 15 Wranglers. Mine is a 2016 - damit! Not to be discouraged, I contacted the developer and got a response that the app was updated to include 16 - 18 JKs and should be released in a day or so.
My app updated overnight and I was able to reprogram the TPMS target to 30psi and indicator light to 24psi. After a cycle of the key the system showed the new target and a second cycle turned my indicator light off. That alone was worth the $41 invested and I’m a happy camper!
Here are some screen shots of the supported vehicles and programming options
I hope you find this to be as interesting as I did.
I stumbled across this app the other day when another member on this site mentioned that he was able to reprogram his new tire size using this app. This sparked my curiosity and began researching the possibility.
I started by downloading the “free” app and did some browsing with some demo data stored within the app. It looked promising so I purchased a middle of the road WiFi OBDII Adapter from Amazon for $26.
A couple of days later I plugged it in and connected my iPhone 6s. Once that was completed I opened the app and learned that you have to purchase a license so you can register your VIN. This cost me $15 for a single license. Once that was settled I was able to connect to the ECU, view all the normal feedback data and get into making some changes.
I started with some simple things like one touch all doors unlock and disabling the horn report when remote locking. Now I could have done this with the dash and steering controls, but I just wanted to see how it worked. Next I wanted to take care of one of my pet peeves, the TPMS light. I keep my tires at 30psi and my light comes on at 28psi. In the winter time, my light is on the entire season so I was really excited to make this change, but when I looked closer at the app I noticed that it only supported 07 to 15 Wranglers. Mine is a 2016 - damit! Not to be discouraged, I contacted the developer and got a response that the app was updated to include 16 - 18 JKs and should be released in a day or so.
My app updated overnight and I was able to reprogram the TPMS target to 30psi and indicator light to 24psi. After a cycle of the key the system showed the new target and a second cycle turned my indicator light off. That alone was worth the $41 invested and I’m a happy camper!
Here are some screen shots of the supported vehicles and programming options
I hope you find this to be as interesting as I did.
Last edited:
