I have a '23 Tremor that I purchased new in July of '23. In Sept of '23 I installed a different set of tires on 2019 Raptor wheels. The Raptor wheels came with the factory 2019 TPMS sensors. I did not have to do any resetting of the sensors as the system was able to immediately self adjust to the 2019 sensors. Sometime near the end of 2024, or almost a year and a half later, I started getting an intermittent TPMS failure on the left rear wheel. It now seems to be constant. I have tried three different wheels on that location. One was the Raptor wheel which I initially assumed had a failed sensor. So I ordered a set of four Ford sensors from eBay. My local service shop is in the process of installing one of the new sensors in that Raptor wheel. However, in the meantime I installed one of the original '23 Tremor wheels in that same location. I'm still getting the TPMS failure on that left rear location which told me it was probably not a bad sensor. Since I wanted to rotate the tires anyway, I moved one of the other Raptor wheels from the right front to that left rear location. Same problem. The other three sensors are still working fine but I'm still getting a failure at the left rear even with two different wheels that had no failures at other locations. Each time I swapped wheels I drove the truck for about ten miles. I tried doing the TPMS reset procedure where you hit the start button to get to the accessory mode and then hit the hazard flasher button six times. I don't have a reset tool so I tried the method where you let air out of the tire until the horn beeps one time but that also failed. It successfully reset the left front first but it double beeped on the right front (which now has the original Tremor wheel) on two different attempts which indicated a failure to reset which was confirmed on the dash readout. Once I get the Raptor tire/wheel back from the shop with the new sensor installed and have all four Raptor wheels back on the truck I will have the shop try using their reset tool but I don't have much confidence that is going to work either. I have seen reports that something as simple as a phone charger plugged into a 12V outlet can cause interference and make the TPMS do weird stuff. The only thing I have plugged in is a radar detector but it has been there ever since I bought the truck in 2023 and the TPMS failure didn't start until a year and half later. My next attempt will be to drive the truck again with the radar detector unplugged to see if it will reset on its own. If all these next attempts fail I'm going to assume a bad TPMS module which will require a trip to the local Ford dealer. I already know they won't believe a damn thing I tell them and I'm sure the first thing they will do is blame the Raptor wheels. If it comes down to going back to the dealer I will probably put the original Tremor wheels/tires back on before I even bother making that trip.

 

Unplugging the radar detector and then driving for approximately ten miles also made no difference. Still have a TPMS error on the left rear only.

 

You might get more responses if you used line-breaks to make your posts more reader-friendly. In any case, you may have an issue with the RTM (Radio Transceiver Module) channel specific to the left rear wheel, or with the BCM handling of data from that specific wheel.

FYI clipped from the workshop manual:
>>>>
And
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Good Luck!

 

Thanks. I didn't realize this was grammar class but I'll try to do better. At least I made an effort to use somewhat correct spelling and punctuation which seems to be an even bigger rarity these days.

The shop manual data you provided pretty much tells me the problem is most likely with one of the modules since I have confirmed that all of the wheel sensors on any of the wheels I have tried are functioning properly when in any location other than the left rear.

I also doubt that it is an RFI (Radio Frequency Interference) since there have not been any changes that I am aware of to any devices that might cause that type of issue. As I said, I also unplugged the radar detector with no effect.

However, there is one other area that I wonder about but have not seen any mention of as being a potential source of RFI. My truck has Pro Power On-Board and includes a dash mounted switch that controls its functions. The switch allows the "generator" to be either fully or partially charging or completely off. When turned off a message pops up stating that all charging ports are off. No matter what mode the "generator" is in there is no change to the TPMS error which would seem to rule that system out as the culprit but I still wonder about what type of frequencies it might be emitting, especially if it were malfunctioning.

The truck also has a phone charging pad and I wonder what type of frequencies that thing emits as well although it never seemed to be an issue before.

I might try purchasing a TPMS reset/training tool but I don't think that will make any difference since the sensors all appear to be functioning properly in other locations although those tools are not that expensive and I suppose it wouldn't hurt to have one. It is kinda hard to justify buying a tool for a truck that is supposedly capable of doing that job on its own and actually did so previously. I have several other Fords but they were built, thankfully, long before any of this nonsense was mandated.

The local shop was not able to do anything for me either since their TPMS reset tool is apparently not compatible with the TPMS sensors on current Ford products. They also did not replace the sensor on the wheel that was on the left rear and that sensor is functioning properly anyway now that I moved it to the right front.

The fact that I also could not do a successful manual reset (air pressure release method) of the right front sensor even though that sensor otherwise functions properly would also seem to indicate that the problem is not with any of the sensors but somewhere else.

I assume the BCM is the Body Control Module?

Bottom line - the truck is still under warranty so another trip to the dealer will probably be next. Oh joy.

 

Yes, BCM = Body Control Module.

And thanks for the line / paragraph breaks.

 

THANK GOD we have Post Patrollers to help us with our posts compositions. :^)

FTR, I didn't see anything wrong with your post.

 

So I'm having a similar issue on my MY23 F150 Lariat. I have random sensors going NO-OP.

Dealer said it was RFI. So it happened again while I was in the White Mountains of NH with no cell service or overhead power lines and no one driving near. Mentioned that to the dealer and they had no answer. I also mentioned how the owners manual said not to use a transceiver / transmitter in the excess of 65Watts I believe. I've worked radar and HF, VHF, UHF, and microwave com systems EMI / RFI issues so I'm not buying the RFI excuse.

Now, the first time I had a TMPS issue was at my 10K service. If they replaced the sensor prior to rotation, that wheel never losses data when the three go missing in random occurances. Every time I had an issue I pulled over and snapped a picture for OQE. I'm taking the vehicle back for another issue having them look at it again.

I'm brushing up on Maines Lemon Law and will inform the dealer about that.

Please PM me if you find a solution.

 

Hmmm? If you read my previous posts you will see that I questioned the Pro Power On-Board system and I just found this on the NHTSA website. Unfortunately, I already tried turning that system off while driving and observed no change to the TPMS error. But I will try again to duplicate the sequence mentioned in this report to see if that actually works.

 

Just curious, does your truck have Pro Power On-Board?

 

You mention buying new sensors, buying a tool, taking in to a shop that can’t program ford tpms, and so forth.

why not put the stock wheels back on and take it to ford to fix for free? Or at a minimum, take it to a shop that’s worth half a crap and have them see if the sensors are talking to your truck properly?

I get that TPMS is a wear item but your trucks 2 years old, TPMs shouldn’t be failing and if it is determined you need a module, Ford will have to make that diagnosis if you want it covered?

if I was having TPMS issues to the point I was swapping wheels, taking it to random shops, buying eBay sensors and so forth with no luck…I’d buy a set of genuine Motorcraft sensors from a reputable dealer and have them installed by a decent mechanic that can activate them.