Tire Pressure Reset Switch and Erroneous Reading

I am trying to figure out why my on dash tire pressure reads all 4 tires 3 psi less than when i check them via manual tire pressure gauge, i tried 3 different gauges and all show correctly except my truck dash, i even tried reset by holding it down etc and still by 3 psi below what the real reading is.

anyone run into this?

 

Did you try another manual gauge? I'd try another one. If its still off, bring it in for service. I did mine the other day using a high dollar pressure gauge and they were dead on with the TPMS readings.

Hope this helps!

 

Notice i stated i tried 3 different gauges so yes i did. and i tried on another vehicle and all 3 of these gauges agreed in reading to .5 error above read psi. so i am leaning that they are accurate.

 

Speed reading, oops. Bring it in for service

 

yea that what i am afraid of, takes 3 weeks to get that setup and to find out that they forgot to properly schedule u and takes another 3 weeks to get in to finally address issues.

does anyone have any info what that reset button do or used for exactly ?

 

I am having a simular issue, my reading on the display is higher than actual pressure. I found the botton to the right of the steering wheel but dont know what its for.

 

Mine is usually 2 psi higher on a manual gauge, than the tpms. Guess I need to check that out

 

I bet your manual tells you all about that button

 

Pages 464 and 465 of the manual explain the button and reset procedure. There is a specific procedure, so follow that and let us know if that helped. If not, then a trip to dealer may be needed.

 

Tire gauges are calibrated at sea level 14.7 atmospheric pressure. You loose .5 psi for every thousand feet in elevation gain. I bet you live at 6000 feet? If so, you need to go the 3psi higher than what your tire gauge is reading.

 

You weren't trying to see what the reading was just after filling the tires, without driving for a while...?? If you just filled them and did a reset, the system has not had time to read the actual tire pressure.... In the Taco... you gotta drive for a while before the sensors send the info to the Computer..!

Just saying... hope it helps.

 

yeap i am at 5700' in colorado. forgot about the elevation setup.

 

Yea, you definitely need to drive it around for awhile and let the sensors adjust. I would do a tire pressure reset, drive around for a day, then check with a manual gauge on all 4 tires and then compare the reading of the manual gauge and the readings in the truck.