Another TPMS Issue - but this time it fixed itself for one trip!

[ECP]

2021 JLURD. About 10k miles ago, I bought a used set of rims/tires from a person. The Jeep never picked up the tpms sensors even though the guy that sold me the wheels said they were there. Did the whole reduce pressure, drive around, add air. nothing.

I gave up and lived with it. ~18000 later, by magic - the pressure shows on the dash. I can't believe it. I'm excited. The TPMS magically started working. I was driving for a few hours and it was still there. Stopped the Jeep and when I got back in, back to not reading the TPMS. If it matters, I went to 35s.

Any ideas? Or were there aliens during that one trip making it read imaginary numbers? Anything else to try? I've read magnets can reset tpms (not on this forum).

Apparently, there are tpms sensors in the tires and they do work. But they only worked for about 100 miles over 20k miles plus ...

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[Philly_]

I've heard aftermarket sensors that are sold by most tire distributors may have issues issues with the JL. If they're not OEM sensors, that could be your problem.

Also, depending on your wheel backspacing, the sensors might just barely be out of reach for them to be detectible. As for how they randomly registered after 20k+ miles, I couldn't tell you.

 

[ECP]

The offset is 0 or 25 (not sure which as I bought used). backspace 4.75 or 5.75 (these are Method 703 wheels).

I was told they are stock tpms and though that they were the old version, but he has a newer 392 that they came off of, so I don't think its that.

 

[Discount Tire]

2021 JLURD. About 10k miles ago, I bought a used set of rims/tires from a person. The Jeep never picked up the tpms sensors even though the guy that sold me the wheels said they were there. Did the whole reduce pressure, drive around, add air. nothing.

I gave up and lived with it. ~18000 later, by magic - the pressure shows on the dash. I can't believe it. I'm excited. The TPMS magically started working. I was driving for a few hours and it was still there. Stopped the Jeep and when I got back in, back to not reading the TPMS. If it matters, I went to 35s.

Any ideas? Or were there aliens during that one trip making it read imaginary numbers? Anything else to try? I've read magnets can reset tpms (not on this forum).

Apparently, there are tpms sensors in the tires and they do work. But they only worked for about 100 miles over 20k miles plus ...

This is gonna sound like a silly question, ....do you have dark tint on the windows?

 

[ECP]

This is gonna sound like a silly question, ....do you have dark tint on the windows?

Stranger things have happened, but only have the factory tint...

 

[Philly_]

The offset is 0 or 25 (not sure which as I bought used). backspace 4.75 or 5.75 (these are Method 703 wheels).

I was told they are stock tpms and though that they were the old version, but he has a newer 392 that they came off of, so I don't think its that.

Doesn't sound like the wheels are the culprit. I have 4.75" on my Method 704's and so far (knock on wood), no issues with OEM sensors. They do read a few pounds high, but I can live with that as I run them under 37psi anyways and rely on my own gauges.

The sensors changed halfway through 2021. You may have sensors from after the change that came off the 392 and your Jeep is set up for sensors that were before the change.

To fix, you would need older OEM sensors.

 

[ECP]

The sensors changed halfway through 2021. You may have sensors from after the change that came off the 392 and your Jeep is set up for sensors that were before the change.

To fix, you would need older OEM sensors.

Good to know its not the rims.. I took delivery in Oct of 2021 so I think I have the second version and they guy with the 392 said his was made late in the year too.

It was reading 40psi when I believe last time I filled them I filled to 36, so I"m pretty sure it was reading right.

I'm going to air down today and see if I get lucky

 

[Discount Tire]

Stranger things have happened, but only have the factory tint...

Just looking at all possibilities. There have been instances where certain kinds of window tinting will affect the sensors transmitting a signal. Roll your windows down and see if there is a change!

 

[C@$per]

I have a very similar issues going on with mine as well, worked for approx 20 miles went out, came on approx 500 miles into a trip, worked for 4-5 days and nothing again. Also on a set of used wheels sensors already installed. Perhaps oem replacements in the future...

 

[ECP]

Just looking at all possibilities. There have been instances where certain kinds of window tinting will affect the sensors transmitting a signal. Roll your windows down and see if there is a change!

You never know! But I've run with half doors and no uppers and ... nada :/

 

[ECP]

I have a very similar issues going on with mine as well, worked for approx 20 miles went out, came on approx 500 miles into a trip, worked for 4-5 days and nothing again. Also on a set of used wheels sensors already installed. Perhaps oem replacements in the future...

I've got a used set of OEM sensors. Just don't want to pay and have it have the same issue... I guess I can do it myself. But right now too dang hot in FL

 

[Goin2drt]

@ECP
1. Not all 21's are equal. different part #'s for the same year.
2. I assure you that you probably have the wrong protocal sensors in yours. You and the guy that sold them to you probably have different production dates.
3. Best way to know is ask him when his was built and when was yours built? With those 2 dates I can tell you for sure.

The 2 protocols are very close so your crazy reading is what leads me to believe you do have TPMS in the tires but they are the wrong ones.

Feel free to DM if you like.

 

[ECP]

@ECP
1. Not all 21's are equal. different part #'s for the same year.
2. I assure you that you probably have the wrong protocal sensors in yours. You and the guy that sold them to you probably have different production dates.
3. Best way to know is ask him when his was built and when was yours built? With those 2 dates I can tell you for sure.

The 2 protocols are very close so your crazy reading is what leads me to believe you do have TPMS in the tires but they are the wrong ones.

Feel free to DM if you like.

Thanks for the input! Yes, I've heard about the switch midway through the production year. Mine was built Oct-21. He said his 392 was built in "after July".

Is there a way to tell by looking at them which is which?

 

[Goin2drt]

No only production dates off the door.

Next thing is if you know the guy get the two VINS and call any Jeep dealer and Ask for the parts dept.Ask for the OE TPMS part # for each Jeep.

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