When I scroll thru my Multi-display the TPMS only displays ___ for each tire w/o any PSI. I also have been looking for a TPMS reset button and cannot find - Manual says under steering wheel, next to steering wheel or in glove box. Doesnt seem to be in any of these places. Does anyone have info on how to fix the display or where this reset button is? 2018 Lexus IS 300 ( Not F-Sport)

First question - does it not function at all? Mine does not display anything while the car is parked unless I have driven it within the past couple of hours. It will begin to display something after driving for a couple of minutes.

Second question - when driving, after 20 minutes or so, do you see a warning light in the gauge cluster? If so, this could indicate that the TPMS IDs have not been registered with the vehicle. The manual says a Lexus dealer needs to do that, but I imagine someone else who knows how to work on Lexus cars could also do it.

I will go and see if I have that button on my 2021. Maybe it's just hard to find. I can't imagine they'd write about it in the manual if it's not there.

See if you can locate the button. I found it by feeling around underneath the steering wheel till I could feel the round button. It's just to the right of the OBD-II port.

Like arentz07 said, the TPMS sensor IDs are probably not registered (assuming you actually have sensors in the tires).

I you have aftermarket sensors, most are known to not show the pressures in the dash, but the system still works as expected.

The TPMS button is very difficult to locate.

Thanks for all your responses - it has always worked but noticed it about 10 days ago not displaying any tire pressure info. I drive an hour to work each day so should be enough time to display. No warning light appears indicating a problem. I'll try to locate the reset button and see what happens. I did read something in the manual that says --- can occur due to "unfavorable radio wave conditions" and wont display any tire pressure. Interesting.....

Did anything happen to the car 10 days ago? Tire replaced? Service of some kind? New wheels installed?