TPMS Question

Discussion in 'General Subaru Discussion' started by iridium7777, Jan 21, 2013.

  1. iridium7777
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    iridium7777 Well-Known Member

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    For whatever reason my TPMS went off on Saturday and remains lit.

    I had the tires rotated but that was probably 2 month ago now, never had an issue with TPMS before. The tires are filled with nitrogen so I'm not sure where would there be a local N2 fillup, but visually inspecting them they're not flat. It's Monday and the light is still lit, all wheels are fine, if there was a slow leak I'd think I'd have a flat by now.

    Is there a way to either re-set this thing or dissable TPMS altogether without going to the dealer? I can't say I find this "utility" very useful and wouldn't mind have it removed, especially if eventually i'm out of warranty and this crap keeps happening.

    anyone have any suggestions on this? I wonder if the cold freaked out the car or is it something else.
     
  2. DIRTY D
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    DIRTY D Well-Known Member

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    any tire store can re-set them, You might want to throw a little more pessure in the tires casue its cold out there and you might have a slow leak.
     
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  3. MNGman
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    MNGman Well-Known Member

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    This is going to be a stupid question, have you checked the pressures? With a gauge? Like Dirty D stated you might have a slow leak, or picked up something causing a leak.
    They also might have been filled close to the limit when it was warmer out. Even with nitrogen the cold weather will cause fluctuations in the pressures. If they were close to the low side when they were filled, with these temps, it is not uncommon for the pressures to have dropped below the threshold.
     
  4. iridium7777
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    iridium7777 Well-Known Member

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    No, did not check with a gage, i gave a good ol' kick the tire test and visual inspection. I'll take a look with a gage and see what happens. If it was a "slow leak" I think by now (3rd day) it would surface as a flat tire.

    Either way, is there a way to disconnect this feature?
     
  5. DIRTY D
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    DIRTY D Well-Known Member

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    NOPE!!! not without getting to technical and taking your dashboard apart. I have had the same issue so top it off and be done with it.***good luck
     
  6. xluben
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    xluben Well-Known Member

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    There's no way to disable the TPMS light other than covering it with tape.

    I'm betting they're actually low and the sensors are doing their job. Nitrogen filled tires will still lose pressure slowly over time, and fluctuate with temp. Combine those two and I bet your tires are low enough to set off the sensors. Check them with a gauge and top them off with air if needed.
     
  7. phi11
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    phi11 Well-Known Member

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  8. xluben
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    xluben Well-Known Member

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  9. sneefy
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    sneefy Well-Known Member

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    This thread happening in suddenly colder weather is AWFULLY coincidental. You didn't even bother checking with a gauge before posting this?

    Check with a gauge. Put some air in. There is plenty available. Nitrogen is a gimmick for anything that's not on the track anyway.

    If the light is steady on, it's reading low. If it's not seeing the sensors or there is a failure, it will flash.
     
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  10. thakrazymule
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    thakrazymule Active Member

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    My wife's light came on in her Xterra last week as well. And even she stopped at the gas station and filled her tires up all by herself, and the light went out. And she's 7 months pregnant. I was so proud of her. :D
     
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  11. SurlyOldManMN
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    SurlyOldManMN Omdat fok jou Staff Member

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    This whole "my tire is fine because it looks and feels fine" myth has got to stop. That's all I have to say about this.
     
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  12. iridium7777
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    iridium7777 Well-Known Member

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    how did people drive around all these years without an annoying light on their dash board -- bet 99.9% of them visually inspected the tires.
     
  13. WRX1
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    WRX1 _ Staff Member

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    Well, I can tell you that my light was not on Sat when I was out and about, but this morning it was on. I think the threshold for subaru is 29psi. I just got in from putting air in all my tires and I only had 1 that was below 30psi.

    Russ
     
  14. SurlyOldManMN
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    SurlyOldManMN Omdat fok jou Staff Member

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    Judging by how people react when the light does come and straight up tell them the pressure is low, I'd guess they had a lot of easily avoidable road side flat tires and/or blowouts. Waiting for something visually noticeable before checking has always been an incredibly stupid idea. Refusing to check the pressure when an automated system just told you there is something wrong is MONUMENTALLY stupid. Smartass. :)

    I don't need a sensor to remind me that I'm not awesome enough to check my pressure without a gauge. TPMS merely reinforces how bad of an idea that is. To get a sensor pop on and assume it's fine because you know the difference between 32 and 28psi via visual inspection is grounds for a well deserved Darwin award (note both are dangerous "hot" pressures IMO). Particularly on today's tires. Stop it. Check your tire pressure with a gauge often. That should be part of a frequent routine also involving checking oil. Don't rely on the light. Do not argue with the light when it does come on. Verify. Either the sensor is right and you bring it into tolerance (99.9% of the time what?), or confirm that one of your sensors is wonky.

    Alright, so I had a little more to say about it...
     
    Last edited: Jan 21, 2013
  15. ofspunk7
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    ofspunk7 Well-Known Member

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    How do you not own a tire gauge? How do you not know to check your tire pressure? Why didn't you check your pressure as soon a you read about it in this thread?

    There is so much wrong with this OP. Please buy a gauge and use it often.

    I am guessing you also don't check your oil..... you might want to start doing that too.
     
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  16. iridium7777
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    iridium7777 Well-Known Member

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    yes yes, you guys are right. yesterday not only did the tpms light go off, but then my hill assist and traction control lights went off too, those were reset with re-starting the car but the tpms stayed on. went to a gas station and bought a gage and checked pressures all around, 3/4 were below 32 psi so i filled them up -- yes, the light went away.
     
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  17. ofspunk7
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    ofspunk7 Well-Known Member

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    Glad to hear man! Check your tire pressure often. It helps with overall performance, gas millage and tire ware.
     
  18. SurlyOldManMN
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    SurlyOldManMN Omdat fok jou Staff Member

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    ... and one more is converted. :)
     
  19. tangledupinblu
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    tangledupinblu Event Coordinator Staff Member

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    I find that in the winter months mine tend to fluctuate around 1-4 psi. Need to check them often for sure. Once a week , or every other week would probably be sufficient.

    Tires are too expensive to run 'em all willy-nilly.
     
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  20. BroCo
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    BroCo Moderator Staff Member

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    Willy-nilly......Interesting.
     
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  21. Deride
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    Deride Well-Known Member

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    Every time I hear people talk about TPMS sensors, I'm so happy our tax dollars went to such a great cause! It's fantastic that our government required all vehicles to have TPMS sensors that trigger a light that everyone ignores! Can't wait for the required backup cameras!
     
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  22. Schikane
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    Schikane Active Member

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    Wish it were an option that I could option out of but....I didn't even know I had TPMS until I started the car and the sales guy gladly pointed at the light telling me that was the TPMS light. I was not as thrilled.
     
  23. ofspunk7
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    ofspunk7 Well-Known Member

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    Just wait till you buy new tires and it is on all the time.... or you pay $50+ to reset the sensors between winter and summer tires.
     
  24. tangledupinblu
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    tangledupinblu Event Coordinator Staff Member

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    Take the gauge cluster apart, remove light bulb, profit?
     
  25. phi11
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    phi11 Well-Known Member

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    or add an on/off switch to the light! moar profit!
     
  26. tangledupinblu
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    tangledupinblu Event Coordinator Staff Member

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    That is less profit phieleven! Unless someone donates an on/off switch to you.:D
     
  27. phi11
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    phi11 Well-Known Member

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    lol, I have extra switches just sitting around.
     
  28. tangledupinblu
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    tangledupinblu Event Coordinator Staff Member

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    You have extra everything laying around! lolol
     
  29. ofspunk7
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    ofspunk7 Well-Known Member

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    I never even thought about the switch idea for the light, that is awesome. The general fix that I saw on 3Gwrx (wrxforums) was to take it apart and put tape over it. I really don't care enough to make this happen. The light doesn't bother me.... instead it is a reminder to turn off my Traction Control every time I get in the car. That way I have two yellow lights on my dash.
     
  30. iridium7777
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    iridium7777 Well-Known Member

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    i actually didn't think the car had this either. when i saw FS posts for wheels/tires with TPMS sensors already "in" them i thought to myself how lucky i am to have bought the base model with out any extra electronic crap in it for it to eventually go wrong... look at me now.

     
  31. ofspunk7
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    ofspunk7 Well-Known Member

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    TPMS and Traction Control are in all 08+ Subies.
     
  32. Schikane
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    Schikane Active Member

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    What annoyed me the most was when I went to Discount Tire to buy my winter rims/tires and was told they could not even mount the tire to the rim unless I purchased the sensors. Apparently its their policy to do this on cars with factory TPM systems!?!?
    After arguing 'politely' with the manager, he sold me the sensors at cost. It just seems every time you do something you find that someone who knows better than you has mucked things up in order to make your life easier or safer or whatever.
    Has anyone come across this situation at other tire stores?
     
  33. DIRTY D
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    DIRTY D Well-Known Member

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    Thats the federal government for you.
     
  34. sneefy
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    sneefy Well-Known Member

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    You'll find that's the case with just about all tire shops now. It's basically disabling the TPMS system if they deliver the car back to you with it not working. They could be held liable at the least, and are breaking the law themselves at worst.

    Thank the nanny state!

    Think about these things next time you vote, BTW. Please.