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question about low tire pressure light

Discussion in '2nd Gen. Tacomas (2005-2015)' started by WABOOM, Nov 21, 2010.

  1. Nov 21, 2010 at 1:26 PM
    #1
    WABOOM

    WABOOM [OP] Well-Known Member

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    the low tire pressure light came on yesterday even though all 5 tires are at 28 psi. I had just gotten a carwash, I don't know if that had any thing to do it. Any ideas? The truck has been restarted probably 8 times since then and its still on.
     
  2. Nov 21, 2010 at 1:27 PM
    #2
    vinnyvavoom

    vinnyvavoom Well-Known Member

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    Check the manual, you can reset it with the button under the dash by the steering column
     
  3. Nov 21, 2010 at 1:33 PM
    #3
    OffroadToy

    OffroadToy This ain't Dodge City, and you ain't Bill Hickok

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    X2...I've had this happen with a cold temperature drop. If everyting looks good just re-set it per the instructions in the manual.
     
  4. Nov 21, 2010 at 2:13 PM
    #4
    Rob H

    Rob H Active Member

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    same thing happened to me today..it was cold and raining last night. Tire Pressure light came on. Check the pressure and it looks good. I will be resetting today.
     
  5. Nov 21, 2010 at 2:17 PM
    #5
    myname150

    myname150 Well-Known Member

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    Yeah everytime it gets cold my TMPS warning light always comes on. Its quite an annoyance and leaves me worried if i really have a nail or something.
     
  6. Nov 21, 2010 at 2:47 PM
    #6
    nagelg

    nagelg Well-Known Member

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    I hate that damn light and have learned to ignore it. I've had a couple bad ones ( TP sensors) and of course had to pay someone to replace them. The light is on again, the tire pressure's are right on and I'll just check the tire pressure once in a while and learn to enjoy the light.:)
     
  7. Nov 21, 2010 at 7:17 PM
    #7
    WABOOM

    WABOOM [OP] Well-Known Member

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    temp here got down to like 17 F last night and was 29 today. I will reset the light . Thanks guys :)
     
  8. Nov 21, 2010 at 8:21 PM
    #8
    skytower

    skytower Well-Known Member

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    Hitch and wiring, aux back-up light, rear strobe lights, radio and underseat sub.
    Hold the reset button and wait for three flashes of the light. If you have all 5 at the same psi and it still stays on, there's a sensor problem.
    Dealer can read the pressure of each sensor if you really wanted to find out.
     
  9. Nov 21, 2010 at 11:00 PM
    #9
    Bozack

    Bozack Well-Known Member

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    My tps illuminated at around 4900 miles. The tires looked fine; so I didn't bother to check any further. Plus my 5000 mile service was coming up. Anyway, the dealer took care of it.
    However, I did read a tread a few months back that said sometimes the spare tire can cause the tps light to activate. Don't know how true it is, but maybe you can check it also.
     
  10. Nov 21, 2010 at 11:34 PM
    #10
    S.S.T.

    S.S.T. Well-Known Member

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    Check your spare tire. It has a sensor on it, too. Mine was on for a month or so, but finally got around to checking. Sure enough it was low. Filled it up, it's been off since.
     
  11. Nov 22, 2010 at 2:44 AM
    #11
    skytower

    skytower Well-Known Member

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    He already checked it.
     
  12. Nov 22, 2010 at 3:52 AM
    #12
    TACOMA TRD

    TACOMA TRD Well-Known Member

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    Take your pressure in all 5 tires down 5lbs hit re-set, then fill up to where you normally run your tires.

    Example, I run 32lbs. I drop all 5 ( spare inc) to 27 then hit reset, I then fill up to 32lbs. I do this for winter because of the drastic changes.
     
  13. Nov 22, 2010 at 4:27 AM
    #13
    84Hilux

    84Hilux Well-Known Member

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    Does anyone know how sensitive the tpms's are? It would be good to know to set them where they would do some good!
     
  14. Nov 22, 2010 at 4:50 AM
    #14
    Pugga

    Pugga Pasti-Dip Free 1983 - 2015... It was a good run

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    I asked the service dept at Toyota that question and I got varying responses between 3 and 5 lbs. From what I've seen with my sensors, that range seems about right. The light comes on when my spare drops that much pressure. I haven't had an issue with the cold yet though so i'm thinking it's closer to 5 lbs.
     
  15. Nov 22, 2010 at 5:45 AM
    #15
    98tacoma27

    98tacoma27 is gooder 'en chicken Moderator

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    The TPMS light will blink constantly if there is a sensor issue.
     
  16. Nov 22, 2010 at 5:54 AM
    #16
    84Hilux

    84Hilux Well-Known Member

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    Yeah, that sounds about right- a steep drop in temperature seems to drop tire pressure as much as 4 psi- enough to make the light come on.
     
  17. Nov 22, 2010 at 9:12 AM
    #17
    snowgod06

    snowgod06 UG legend wannabe

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    If you reset it and it still doesnt turn off, welcome to my world. Mine has been on since september, and it doesnt reset when i try. I have to wait till warm weather comes and it turns off on its own. I hate this feature, havent had sensors since 2006.
     
  18. Nov 22, 2010 at 4:09 PM
    #18
    skytower

    skytower Well-Known Member

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    Light only blinks when computer recieves no signal from a programmed sensor. If sensor is not reading the psi that is in the tire, the computer has no way of knowing. If all tires are equal and computer is reset, then it comes back on, you have a problem.
    For the sake of covering all the bases:

    Set all 5 tires psi, push button until light blinks 3 times. If light comes back on, check tire psi again. If all tires are equal, there is a problem with a sensor.
     
  19. Nov 22, 2010 at 8:25 PM
    #19
    WABOOM

    WABOOM [OP] Well-Known Member

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    I reset the light and I appreciate your help! I think the sharp temp drop is the reason for the light coming on:)
     
  20. Jul 27, 2011 at 7:35 PM
    #20
    bachm

    bachm Member

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    The dealer bent or stripped the valve stem external threads on my sensor unit by not replacing hubcap properly.
    Is it possible to rethread the stem so I can put a new extender on the valve stem?
     
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