TPMS Reset

I have tried to reset my TPMS and I cannot get it to reset. The measured tire inflation shows 35 psi but my TPMS on the display shows 32 psi. Any ideas? I found the manual info lacking.

 

Where do you find your TPMS on the display? I have looked everywhere (even tried to read the manual ) but can’t find it.

 

The display in the truck is going to show what is reported by the sensors. A discrepancy between that and your gauge is not going to be fixed by resetting the system because it's still getting its data from the sensors. Resetting the TPMS just resets whatever the current sensor report number to be viewed as the normal pressure by the system. It essentially will dictate what the system views as the proper range, but it doesn't change the data the sensors provide.

For example, if the factory PSI was 35 per the sensors if the pressure drops below whatever the threshold is it will pop up the pressure alarm. Now, if you decide you want to run your tires at 40 PSI you would put all the tires to that pressure, and then reset the system so it would now view 40 PSI as the norm and raise the low pressure alarm threshold accordingly.


Your gauge and your sensors don't match up and you can't fix that by resetting it. Buy a new gauge that reads the same as the sensors, or account for the discrepancy based on whichever you trust more.

 

I'd try another gauge.
My compressor inflator with gauge reads 4 PSI higher than my handheld dial gauge.
The handheld reads the same as what the TPMS in the truck reads..
For years I couldn't figure out why I kept filling them to 42 but the TPMS kept reading 38.
Now I know to add 4 more PSI when using the inflator.


Just my experience..

AND welcome to the forum..

 

Cheap air pressure gauges may not be accurate, get a better one.

 

Even if it's accurate, the sensor might be off by a pound or two. There could still be a variance between a gauge and the sensor. It's really just not something to worry over. Pick which one you trust, and account for the variance accordingly.

 

I had the same issue with my sensors. There is a difference between my tire sensors, compressor gauge, tire gauge and deflator gauge by as much as 5 pounds. They all read a little different. Resetting your TPMS sensors won't change that. They are calibrated to read what they read. I agree that it's a little frustrating. To me it's not that big of a deal.