App recommendation TPMS

2008 Tundra limited here.

I have a flashing tire pressure warning light. Must have a bad sensor.

ive genrally used the free version of OBD fusion but dont see a way to read the sensors.

Any recommendations for an app that can help me out here.

 

@shifty` did some magic with the help of OBDLink MX+ on his first Gen and wrote it up here

 

One side effect of that though, It appears something possibly happened when I cleared my two codes out of the TPMS ECU.

OBDLink's app allows you to connect to any ECU, regardless whether it's the main ECU, TPMS, 4WD, whatever. You can have it prompt you on each connection about which ECU to connect. I had to specifically tell it to hook into the TPMS ECU to get there. This may be confusing for some who just want to get in there and get it done, you need to tell it specifically to connect into TPMS ECU. Once in, it's easy to clear the codes, or if you prefer, to read the TPMS data.

That said, I cleared those two codes out, eventually got new wheels with new Denso brand sensors (only OEM for me), all was fine. I got more new wheels, and had DiscoTire plop in some Continental sensors, then clone those to my new Denso sensors so I had two sets of functional tires with good TPMS. To wrap up a short story, I told my son one day, "damn one of my tires looks low in the rear... but I don't have a TPMS light, wtf?"

Sure enough, the damn tire was at 20psi, down about 15psi. Now, two things to say here. One, I'm positive the 1st shop used the Denso sensor IDs, and updated the TPMS ECU with my new sensor IDs, I can physically see today that the TPMS sensor IDs in my ECU today are clearly different (except the spare, it's the same). Two, I'm wondering if clearing out the code in the TPMS ECU somehow made it forget about the tire(s) that I cleared on? I dunno.

But hey, the end input is the same: Flashing light means "failure to comm, usually with one or more sensors". Solid light means "low tire". You can clear the codes, but really, if you're on your factory sensors, you'd maybe be wiser to look up your sensor part number at www.densoautoparts.com and buy one from just about anywhere except scAmazon or fleaBay lest you get fakes, then carry them up to the tire shop and have them swapped.

Or buy a TPMS reader you can use to check if a sensor is sending a signal, and replace for that tire. But if one just failed, the others will soon too. Mine started with 1 fail. Then another failed 2 months later.

 

You need to buy a Toyota pack for it, I believe. I used obd fusion to locate a dead sensor - it was showing unrealistic temperature and pressure. Also it says which wheel is it. Connect to Network D, not to the default one. This is where TPMS lives.