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How to determine which TPMS is faulty?

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4K views 3 replies 1 participant last post by  BluePHEV  
#1 ·
Last year one of the TPMS sensor went bad, presumably due to a dead battery. Brought it to Mavis and they identified and replace the one faulty one, for $95. It just happened again, presumably from another failed TPMS sensor. Why can't Hyundai allow the functioning ones to report the value, rather than basically shutting down the entire TPMS system due to one faulty sensor.

Anyway, is there any way to force the car to display the ones that are functioning, so I can pinpoint which is the faulty one? If not, can I get the info with one of those Bluetooth OBD reader? I know the proper tool is a TPMS tool, but I'm not going to spend >$200 for the very occasional use.
 
#2 ·
I bought a BlueDriver OBD2 reader and it was able to read the information. BlueDriver is the most expensive one, but it specifically states that TPMS codes are supported. Not sure if the many other much cheaper ones can read it. BlueDriver does come with its own app, whereas the others you'll have to search for and experiment with different apps. I can now just purchase a single TPMS sensor for $15 and bring the one tire to a shop, rather than paying Mavis $95 again. Buy once cry once.

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#3 ·
So I went ahead and pressed the clear button to clear the fault, and now it's stuck on "drive to display" on the tire pressure menu :ROFLMAO:

I have a spare wheel coming in, will put on an old tire that I saved from when I bought new tires, and get it mounted with a new TPMS and see if that clears it up.
 
#4 ·
Just to update the thread in case someone wants to troubleshoot this in the future. The fault came back two days after I cleared it. I bought an after market sensor from Amazon for $12. Paid a local installer $30 to put it in. After driving it for a few miles the fault cleared itself and gave a proper PSI reading on all tires. No programming of any kind needed. I was a tiny bit unsure whether "front right" means driver's or passenger's side lol, but figured it had to be the passenger side.

The BlueDriver reader seems very limited as it can only work with its own app. The BlueDriver app has absolutely no information on the HV battery. I was hoping it would give some info on its state of health. I'll likely be buying a different OBD reader and try a different app that gives info on EV/PHEV.

The ASIN number for the sensor I bought is B08GLJZHV9. Search for it on Amazon.

I contemplated buying a scissor jack and replace the sensor myself, by jacking the car onto the edge of the tire to break it loose like I saw on Youtube video, but decided it's a bit too janky lol.