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TPMS Reset

Discussion in 'Wheels & Tires' started by WestTexasTacoma, Oct 26, 2008.

  1. WestTexasTacoma

    WestTexasTacoma [OP] Active Member

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    I have a question. My TPMS light went off so i checked my tires and one of them was low. I filled the tires with air, two days have gone by and the TPMS light is still on. Is my TPMS system going haywire or what? Any answers will help tremedously thanks!!!!:confused::confused:
     
  2. chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Staff Member

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    Did you check your spare tire?
     
  3. tacomaman06

    tacomaman06 Carolina Alliance: Lead, follow, or get the hell o Staff Member

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    yep....gotta check the spare too...it has a sensor also.
     
  4. Brunes

    Brunes abides. Staff Member

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    You said you filled the tires- Did you air more then one??
     
  5. WestTexasTacoma

    WestTexasTacoma [OP] Active Member

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    Well i checked the tires and one was a little low. I didnt realize that the spare tire had a sensor also. Thats probably gonna be the culprit.:thumbsup: Thanks for the 411!!!
     
  6. lsocoee

    lsocoee My hair is all natural Staff Member

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    You'll have to take the spare down to check it. I turned mine around so the valve faces down and now I can top it off much easier.
     
  7. Janster

    Janster Old & Forgetful

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    Mine went off about a week ago...... My spare tire was down to 22psi.

    I find it kinda weird that the recommended psi in these tires (stock) is 29psi and the sensor comes on with only a 7psi loss in pressure?

    Does anyone know what pressure these things (sensors) are 'learned' from at the factory? What's the TPMS spec supposed to be that they come on at?

    I guess that's a good thing they come on earlier (less loss in pressure).
     
  8. Simon's Mom

    Simon's Mom Wag More Bark Less

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    I'm gonna do that today, thanks for the tip, my light is on as well! :thumbsup:
     
  9. mws4ua

    mws4ua I'll try being nicer if you try being smarter.

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    I love this forum... so easy to find great answers!

    I have the same problem, except all of my tires are w/in 1 PSI of recommended. I was going to ask if the cold weather could do it b/c the light came on the first 'cold' morning of the season.

    Completely forgot about the spare. Will check it tonight.
     
  10. mws4ua

    mws4ua I'll try being nicer if you try being smarter.

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    I checked my spare and it's low (24psi). I took the spare completely off the truck during the process. How does the truck monitor the tire pressure in the spare? It was only held on by that metal cord thing. Nothing that I saw was connecting the tire to the truck.
     
  11. Brunes

    Brunes abides. Staff Member

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    The sensors are radio broadcast...There isn't wire or anything. That's why Toyota has to program new ones for you if you get new rims or anything.
     
  12. eordonez

    eordonez Living vicariously through mjp2

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    That is what i thought: oh my spare must be low.......

    truth is there was no spare anymore.....
     
  13. joshryn09

    joshryn09 Taco on 20's

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    my stupid light went off twice in two weeks! spare had a leak! dealer replaced under warranty:)
     
  14. 311offroad

    311offroad Stock Taco For Now

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    How do you know that you have TPMS (without airing a tire down and waiting for the light) does it only come on certain packages or years?
     
  15. squad314

    squad314 Thinks he's Steve McQueen

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    [​IMG]

    I'm not sure if it was only available on certain models but when you turn your ignition to the second posistion,all of the idiot lights self test.The TPMS icon is located just below and left of your odometer.To use my wifes description,it looks like a "fluted vase with an exclamation mark inside".

    Another indicator is the sensors are incorporated in your valve stems as others have said....Finally,check out this pic lifted from another thread.It's the TPMS button and it's located under your steering wheel.
     
  16. joshryn09

    joshryn09 Taco on 20's

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    if you have metal valve stems on ur tires, then you have a TPMS in your spare and all 4 tires! thats what my dealer told me

    plus if you have the reset button!
     
  17. al's toyota

    al's toyota Member

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    If anyone views this and has come up with the fix to disable the TPMS without tearing into vehicle let US know. I can't see what is so hard about checking air in your tires and being responsible for your own actions. If you can't do that you should be taking the bus or walking!
     
  18. FoxySandChick

    FoxySandChick Well-Known Member

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    This is what I found.
    The TPMS mandated by the US law must warn the driver when a tire is under-inflated by as much as 25% {Ref: US DOT NHTSA Docket No 2005-20586}.
    TPMS should be set at the lowest cold inflation pressure recommended by the manufacturer.

    So if set by factory specs at 29 psi, it will signal when a tire gets to 22 psi.
     
  19. 007Tacoma

    007Tacoma I dub thee malicious!

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    When you set the system (holding the SET button) it takes whatever the current pressure reading are as the new normal. It seems that my light goes off whenever they are more that 5 psi out of range.
     
  20. al's toyota

    al's toyota Member

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    I realize that there are laws that have been imposed once there has been an "improvement and safety" featured added to a vehicle but there should be a reasonable way to deactivate the system similar to airbag deactivation.
     
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