[DiamondMox]

If you normally have them down at 26-28, then that is why you are getting the TPMS light. By default, it will trigger when under 30. If you have Jscan, you can turn down the trigger point, though.

 

[DiamondMox]

Depends on your year. I believe 2013 is when they switched to premium, standard was what they used before that. Since you have a 2015, you should have the premium where it displays all 4 tires in your EVIC.

I'm assuming they issued you the right sensors, but do you know the part number they gave you? The frequencies changed again in 2022 so if they gave you current TPMS sensors, the Jeep wouldn't be able to read them.

 

[DiamondMox]

Jscan isn't reading the sensors directly. It is only reading what is being reported by the computer. The sensors are still being read by the TMP module and being relayed to the computer which is what Jscan talks to. If Jscan is getting current readings, then so is the computer. What pressure are they reading and what threshold pressure are you currently set at?

 

[DiamondMox]

My suspicion would be that at some point, one of the tires fell below the threshold and triggered the light. The light won't shut off until that tire goes back above the cutoff. I believe there is a 7psi gap between the trigger and reset. If you look at the screen where it shows you all the tire pressures, it will tell you what the pressure is it is expecting and the flashing one would be the one it is looking for. You could just add 10psi to them all, then drive it for 10 mins and see if it resets.

 

[DiamondMox]

Ok, then I am not sure what the issue is. Is the TPMS disabled in Jscan?

 

[DiamondMox]

Then my next suggestion is to take it to a real tire shop, someone who works with tires all day every day and see if they can help you. I am at a loss as to why jscan can read the pressures from the computer, but the dash is not getting that info.