TPMS fail

Worked great for 95,000mi
Quit one day then worked next day.
Now, persistent fail.
Tire P’s all ~35psi
Any easy (non-dealer) diagnostics or fixes?

 

Seems early for a battery to die. A tire shop should be able to tell you which sensor(s) aren't transmitting.

 

Whenever you swap tires and rims with a different TMPS sensor, you need to reset sensor with new TMPS information. When you change back to the previous tire and rim system the computer my pick the old TMPS sensor.

 

I’ve had individual sensors fail before; this indicates either all are failing at once (very unlikely) or the computer/its connections have a problem (note above that it failed one trip then came back to normal, then failed again).

 

I’ll keep that in mind for next time I swap tires or rims.
Any ideas about my problem?

 

All my TMPS failed at the same time. I purchased new sensors with tires from Costco and they worked after driving several miles. Once I changed back to the original set of tires and rims, it took several miles again before the system recognized the TPMS sensors. Your vehicle should have the TMPS reset button located on the right , lower, side of steering wheel. Check manual for guidance.

 

Did they quit, then come back, then quit again - like mine did?

Weird.
I did not change tires/wheels/sensors - just drivin’ around like normal.

Good tip, I’ll try it.
Thanks

 

Dealer says it was only one sensor (left rear).
Seems odd; all sensors were blanked out and the screen said it just needed calibrating. (The reset button did nothing) Anyway, it’s fixed.

cost was $220
Price check on that?

 

makes one wonder
<$50 for 4

https://www.ebay.com/itm/2338784110...tH1+hIYkDav1PNMtLyOeTlS+VT8=|tkp:BFBMwOv5yvdk

 

Anybody know weather the spare tire has a TPMS sensor in it? I asked a few tecks @ my local stealership and could not get a straight answer from any of them.

 

The OEM sensor runs about $90 MSRP so that sounds about right for the sensor and labor.

 

It usually does not.

 

I do not see a location on the instrument panel to display the spare pressure. Maybe it would have to be programmed?
Mine (2020) did not appear to come with a 5th sensor.
My wife's 2021 4Runner SR5 does have a 5th sensor and indication next to all the other sensors.