phantom tire pressure warning

[eikond]

Was on the highway tonight and noticed the low tire pressure light go on.. It flashed for 10 seconds and then stayed on solid. I pulled off into a McDonalds parking lot.. after talking to 6 different people about the car, I walked around and checked the tires visually. I don't have a tire gauge in the car yet.. Everything looked just fine, so I turned the car back on and started driving.. it blinked for a little while longer and then turned off.

Anyone else have a phantom tire pressure light go on?

[ashtray]

You may have a tire at 27psi instead of 32, or whatever your dealer set it at. Im not sure at what point it comes on, but it's possible for a tire to be low but not look low visually. Old 70 series tires you could tell by looking. New low profile tires you really need a tire gauge.

[Bristecom]

Check it with an accurate tire pressure gauge. They should be at 35 psi.

[Snoopyalien24]

I remember somone saying that sometimes, the sensors pick up interference and display false info.. I don't remember where, who, when this was spoken.

But check how much psi you gots

[Bristecom]

Yeah, it does happen though. It's happened in our Evo X a few times. But it's always worth a check.

[eikond]

Tire pressures are actually a little high.. between 38 and 40 for all four wheels.

[Bristecom]

Originally Posted by eikond

Tire pressures are actually a little high.. between 38 and 40 for all four wheels.

Did you just get done driving or was it still hot/sunny out when you measured them? If so, I'd retest them after letting them sit in the dark for a few hours and let some air out to make them 35 psi. If it keeps coming back on then you may want to get the sensors checked.

[nathanR]

Don't forget to check the spare. The light on my wife's MS3 kept lighting up rather randomly. Turns out the spare is what was causing it.

[driver01]

i believe there is no tire pressure sensor in the spare tire of the fr-s/brz as it is not a full size but a spare saver spare

[Draco-REX]

It's been my experience that when tires get warm, pressures climb 3psi on average sized car tires. So if you just got done driving and check your pressures, subtract 3 for your cold pressures.

As for the TPMS light, were you pacing a pack of cars? It's possible a nearby car was interfering with yours.

[eikond]

Originally Posted by Draco-REX

It's been my experience that when tires get warm, pressures climb 3psi on average sized car tires. So if you just got done driving and check your pressures, subtract 3 for your cold pressures.

As for the TPMS light, were you pacing a pack of cars? It's possible a nearby car was interfering with yours.

I checked pressure about two hours after I got home. The car was parked in a cold/dark garage.. so lonely..

It's possible another car might have interfered. There was other traffic around me when the light went on.

I put another 50 miles on it yesterday and had no pressure light come on..