So it's cold out, so it's normal for my tires to lose air and the tp sensor lit up.. So I filled all four tires to about 35 lbs.. And my tp light is still on.. This has happened in the summer before and I had inflated them back to normal and that light went off.. Why won't the light go off this time?

 

The TPMS may have malfunctioned. I assume you have went over 40 mph for at least 20 seconds or so since re-filling the tires (this triggers the sensor to go on or off per how your tires are filled). You could also have a bad leak or nail in those tires. Do you have a manual or digital gauge to know precisely how many pounds are in each tire?

 

They are brand new tires lol, and I have a manual gauge.

 

Your tire installer may have banged up one of the sensors or didn't calibrate it right (assuming you got new sensors with the tires) during the install. I would get the sensors checked.

 

Take it on a highway tromp across town. The light will go off. Will have to be longer than 20 secs. It'll take about 10 mins at 55mph or more.

 

While you are correct in that driving resets it, you don't need to drive nearly that fast nor that long.

I believe it is only about 15-16 mph and less than a minute. Whenever I have had to fill air in my tires, the light resets very quickly and while I am on residential streets going far slower than 55mph.

 

Don't you have to do a tpms reset after changing tire/rims?

 

curious of the same -just upgraded rims and my tpms hasn't gone off in a while and i'm at 34psi all the way around with plenty of drive time. I figured one of them just took a crap from the installer and I need to figure out which one and replace it.

 

Is your light going on solid immediately when you start up the car, or is it brinking for about a minute, then going solid?

 

When you start the car, if it blinks and then stays solid, do this: https://www.myg37.com/forums/d-i-y-i...-for-free.html

A shop swapped my rims and told me I needed to go to the dealer to get it reset. Little did they know that there are geniuses on this forums

 

Just to be clear... I meant blinking... not brinking. Sorry to any asians on the forum

 

Its cold... There is your answer.

When the tpms's are in colder weather they can trip low tire pressure warnings. I usually set my tires to max PSI in the winter so they wont trip. Colder weather will always trip the tpms light.

If you want the reasoning behind it, its because when its colder out the air inside the tire is thinner and due to that the sensor has a hard time getting a clear reading. If you go on the Hwy for 5-20 min the light should go out if you are keeping a decent speed. That will be because the tires have warmed up enough where the air inside is now readable.

Simple science if you think about it.

 

Do you need to get new TPMS sensors when you get new tires?

And is one set of TPMS sensors better then another or are they all the same.

 

At 73K miles I've had the situation with the blinking TPMs before staying on solid when the tire pressure was at 35 on all 4 tires. The dealer reported no signal from one of the TPMs. They replaced the bad TPM under warranty since Infiniti claims the TPM battery should last a lifetime. At 83K miles the TPM light flashed again before steady on. They reported low signal from all 4 TPMs and replaced all 4 under my (100K) warranty.

 

if im not mistaken you can also "reset" the tpms by deflating all 4 tires and then re-inflating them again. Or maybe thats just g35s. But that might be a fix for your problem.