Tire Pressures not read 2017 LC (1 Viewer)

[shaytun]

I recently filled my tires with air while the car was off from 30psi to 33psi. Turn the car on to drive and the TPMS is not reading any of the tire pressures. The light is not on. I tried resetting the TPMS with the button underneath the driver's side and it still won't read it after multiple drives. Strange how this happened right after filling the tires. Any thoughts?

 

[2021 LC200]

Can you explain some more what you did?

Reason I say is that at initial start up I need to drive a bit for the pressure to show up so depending on what you did and in what sequence that can have an impact

With a running engine bleeding down seems to work “live”. Makes sense so you can get warned for a flat tire.

Going back up live may not work the same. Driving some maybe required.

Whatever logic the Toyota engineers applied, maybe to prevent a tire showing high pressure “suddenly” when depressed on a curb or undulating terrain?

 

[shaytun]

Can you explain some more what you did?

Reason I say is that at initial start up I need to drive a bit for the pressure to show up so depending on what you did and in what sequence that can have an impact

With a running engine bleeding down seems to work “live”. Makes sense so you can get warned for a flat tire.

Going back up live may not work the same. Driving some maybe required.

Whatever logic the Toyota engineers applied, maybe to prevent a tire showing high pressure “suddenly” when depressed on a curb or undulating terrain?

That's an interesting point. I used a compressor to inflate. Then went for a drive and noticed pressures weren't being read. I tried multiple times to reset the TPMS both with the engine running and with it off (Start/Stop pressed twice without foot on the brake).

I wonder if it would be better in the future, regardless of what happens this time, to inflate while the car is turned on.

 

[2021 LC200]

That's an interesting point. I used a compressor to inflate. Then went for a drive and noticed pressures weren't being read. I tried multiple times to reset the TPMS both with the engine running and with it off (Start/Stop pressed twice without foot on the brake).

I wonder if it would be better in the future, regardless of what happens this time, to inflate while the car is turned on.

You probably need to drive quite some time like 15 to 30 min

So I would give it some time to show up and not worry about it.

 

[shaytun]

Thanks. I'll try that and will let you know how it goes.

 

[Fisher23]

Thanks. I'll try that and will let you know how it goes.

You need to press the TPMS reset button under the dash.
It is under where the gas door & hood release is.

 

[shaytun]

You need to press the TPMS reset button under the dash.
It is under where the gas door & hood release is.

I did that multiple times until the light flashed. That's what I was referring to earlier.

 

[ToothDr]

If you reset the TPMS you will need to drive the truck at higher speeds for over 30 min I believe. Process and duration is in the owners manual. Mine took a little over 30 min. May take up to 1 hour to reset