mbonilla86

The flat tire or low air sign comes up in my dash board i have check all my 4 tires pressure and they are perfect!!
one day the sign will go away and another day it would turn back on!!

How do i fix this or reset this??

its a 2010 IS250 if it makes a difference!

new.era.13

iTrader: (10)

maybe the spare tire? because my family 4runner has that also and its always the spare tire.

nmpeter

iTrader: (15)

What is perfect to you? It might be the slight temperature chances we're having.

Bigrahizzl

iTrader: (8)

weather change maybe???

mikemoto81

+1 gotta be the spare

jbjones85

iTrader: (20)

Probably the weather, mine was on this morning too and when I went to lunch it wasn't on any more

09lexus250

switch to nitrogen it does help with the weather changes. my light would come on and off every day. finally i just switched to nitrogen and they havnt come on since.

shiny250

iTrader: (4)

^^^ +1 on nitrogen. plus it stays in the tire longer than regular air so u dont have to refill as often

mbonilla86

Thank You guys!! ^
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brociouz

iTrader: (65)

I've had this happen with temperature drops too, but if you checked the PSI in all 4 tires that's pretty much ruled out.

There's a TPMS sensor in the spare tire?

516IS

iTrader: (12)

lol, I didn't know the spare had a TPMS neither... Is that really true?

Alias

iTrader: (2)

ˆˆˆfrom what i heard there are no TPMS in our spares.

vinconist

iTrader: (9)

There's no sensor in the spare, I don't carry my spare in my car and there's no sensor warnings...btw if the op still has a problem with the warning light after filling then up, then it's a bad sensor

NoHoIS350

Dude you just have to go the dealer & get the sensor reset. They get tweaked & have to be reset. Takes like 3 min at the dealer. It happened to mine twice. The have this scanner like tool they don't even have to take the tire off they just synch to your sensor in the tire & reset it. Real quick.

brociouz

iTrader: (65)

Okay, good to know I'm not crazy.