This morning the light was on, When I was on lunch break it was still on so I reset it...it came back on, then went off a minute or two later and never came back on...what would cause that?

 

Did you bother to check your tire pressure?...

 

i have aftermarket rims without the sensors and might light comes on for 3 days and then gos off for like 2 weeks odd.. but i have a 07

 

yeah mine didn't throw a light until a bout 8 months after i got new tires... its not as much "fail" and more like "wtf.."

 

Hmm weird. Do the PVC pipe trick!

 

whats that? im thinking u run over a pvc pipe and it fixes everything? hahahah

 

TPMS is life.

 

here is how you get rid of the light

 

PVC pipe trick:
https://www.scionlife.com/forums/viewtopic.php?t=234237

 

I never thought of doing the PVC trick! That's ingenious!

 

They passed the visual inspection. lol

The light hasn't came on since I reset it...idk what's up with it.

That pvc thing looks like a bomb...hope your car never gets searched. lol jk

 

(Please remember, too, that these TPMS have tiny lithium batteries in them, and those batteries will eventually die... Average life is supposed to be around 5 years.)

 

You'd think when the the tire pressure warning light came on the first thing the owner would do is check the tire pressures... properly. Why not rule out the obvious?

 

So did mine, when I was in the airport 2 hours away from home. I'm glad I actually checked the pressure though. It was 20 psi and looked just like the other tires.

Seriously though...if your any warning light comes on, maybe it's doing its job.

 

That's the downside when people rely on TPMS, it usually comes on when the air pressure is drastically low, it should be checked regularly.

 

TPMS should flag a 5 psi difference. Example.... if the lowest tire is at 28 and the highest is at 32, there is a 5 psi difference and it sets the light.

As a service shop, we provide Nitrogen for tires. The XB comes with nitrogen fill from Scion for better sensor life. (Lots of good reasons for nitrogen, read up on it) We have found that on the first cold days of the season, the system will be low on pressure and flag the TPMS. A quick top off and the tires are good till they have a leak, no matter the temsp outside. We called a top chemical company and they said there is a formula out there to set the pressure per ambient temp so that will not happen when the weather turns cold, but the easy thing is to just set the pressure on the coldest day and it's good from then on.

I agree that checking the tire pressure is a good thing to do, but checking it too often or not checking it correctly will let air/nitrogen out and eventually force you to add to the tire. Just a thought.

 

So anyways, light hasn't came back on.

/thread

 

i had the same problem but i went and got checked and found out my sensors were broken.

 

The light will flash continuously to let you know it's broken as well.

 

I say just take the dash out, and remove the tpms light, and maintenance required light.