Tire pressure warning on - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

sa1126 · 10-27-2012, 05:19 PM

I took the car to the dealer this morning (for them to run diagnostics on crickets issue) and now the light is on. Is there something I can do or should I just wait until they get my parts?

celica73 · 10-27-2012, 05:24 PM

Do you have OEM wheels with the sensors? If so, I would start by checking tire pressures. Nothing says you didn't run over a nail on the way home.

sa1126 · 10-27-2012, 05:28 PM

Stock wheels/tires, never been removed from the vehicle.

I checked the pressure--all set the same around 30 psi.

It was fine this morning on the way to the dealer, it just came on when I turned the car on after leaving.

wparsons · 10-27-2012, 08:22 PM

IIRC, stock pressure is 35psi all around? I also think the sensors stock will go off if the pressure is +/- 3 psi from what they want for pressure.

Check the manual or door sticker, it'll tell you what the pressure should be for sure.

mugen79 · 10-27-2012, 08:30 PM

My tires were at 32 psi and tire pressure light came on occasionally. So I took my car to the dealer and they said tires should be at 35psi so they filled it up and reset the sensor and lights are off now.
But it is strange how at 32psi, the light would come on.

sa1126 · 10-27-2012, 08:32 PM

I filled them up to 35 and the light was on for about 10 minutes before going out. Strange but crisis averted. Sorry for the waste of the post, I guess the cold front that blew through had an effect on the tire pressure.

rice_classic · 10-27-2012, 08:45 PM

Your tire pressure changes roughly 1 PSI for every 10 degrees of temperature. It is probably colder now than when the tires were originally inflated. If they were originally inflated to 32psi @ 80F and now it's 50F outside guess what... they're probably at 29psi or close to it. Voila, TPMS light will come.

I'm sure it's in the manual but does anyone know if the spare tire has a TPMS sensor it in? My dad's CRV did this. His TPMS light was on and it was caused by the spare tire being too low.

dsgerbc · 10-27-2012, 09:26 PM

Rule of the obvious: "XYZ warning light on" -> bring XYZ to correct specs.
30 psi will trigger the light.

10-27-2012, 05:19 PM	#1
sa1126 Senior Member Join Date: May 2012 Drives: n/a Location: Shavano Park Posts: 139 Thanks: 1 Thanked 21 Times in 18 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Tire pressure warning on I took the car to the dealer this morning (for them to run diagnostics on crickets issue) and now the light is on. Is there something I can do or should I just wait until they get my parts? __________________ Raven MT as of 07-09-2012 '01 Taco prerunner

10-27-2012, 05:28 PM	#3
sa1126 Senior Member Join Date: May 2012 Drives: n/a Location: Shavano Park Posts: 139 Thanks: 1 Thanked 21 Times in 18 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Stock wheels/tires, never been removed from the vehicle. I checked the pressure--all set the same around 30 psi. It was fine this morning on the way to the dealer, it just came on when I turned the car on after leaving. __________________ Raven MT as of 07-09-2012 '01 Taco prerunner

10-27-2012, 08:32 PM	#6
sa1126 Senior Member Join Date: May 2012 Drives: n/a Location: Shavano Park Posts: 139 Thanks: 1 Thanked 21 Times in 18 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	I filled them up to 35 and the light was on for about 10 minutes before going out. Strange but crisis averted. Sorry for the waste of the post, I guess the cold front that blew through had an effect on the tire pressure. __________________ Raven MT as of 07-09-2012 '01 Taco prerunner

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10-27-2012, 05:24 PM	#2
celica73 Senior Member Join Date: Jun 2012 Drives: '13 BRZ / '11 Outback / '06 Tundra Location: Durham NC Posts: 510 Thanks: 6 Thanked 155 Times in 104 Posts Mentioned: 4 Post(s) Tagged: 0 Thread(s)	Do you have OEM wheels with the sensors? If so, I would start by checking tire pressures. Nothing says you didn't run over a nail on the way home.

10-27-2012, 08:45 PM	#7
rice_classic Senior Member Join Date: Jun 2012 Drives: Nevermorange FRS Location: Seattle, WA Posts: 4,173 Thanks: 757 Thanked 4,208 Times in 1,808 Posts Mentioned: 78 Post(s) Tagged: 1 Thread(s)	Your tire pressure changes roughly 1 PSI for every 10 degrees of temperature. It is probably colder now than when the tires were originally inflated. If they were originally inflated to 32psi @ 80F and now it's 50F outside guess what... they're probably at 29psi or close to it. Voila, TPMS light will come. I'm sure it's in the manual but does anyone know if the spare tire has a TPMS sensor it in? My dad's CRV did this. His TPMS light was on and it was caused by the spare tire being too low.

10-27-2012, 09:26 PM	#8
dsgerbc Senior Member Join Date: Jan 2012 Drives: BRZ(sold), STI Location: A2, MI Posts: 1,915 Thanks: 176 Thanked 419 Times in 241 Posts Mentioned: 11 Post(s) Tagged: 0 Thread(s)	Rule of the obvious: "XYZ warning light on" -> bring XYZ to correct specs. 30 psi will trigger the light.

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