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TPMS and low tire pressure indicator

Discussion in 'Wheels & Tires' started by jsquared22, Oct 6, 2019.

  1. Oct 6, 2019 at 7:55 AM
    #1
    jsquared22

    jsquared22 [OP] _________________

    Joined:
    Sep 16, 2017
    Member:
    #9694
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    62
    Vehicle:
    2018 White Tundra Platinum
    Just noticed the low tire pressure light on the dash now that we're having cooler weather. Does this picture baffle you as much as me? I realize I need to add air, but I'm surprised that 29 lbs is not indicated yellow on the passenger front and driver rear. The tires haven't been rotated in 6 months.

    Tire Pressure.jpg
     
  2. Oct 6, 2019 at 8:01 AM
    #2
    Tierhog

    Tierhog SIG-AHOLIC

    Joined:
    Feb 7, 2018
    Member:
    #12731
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    1,200
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    First Name:
    Steve
    Florida
    Vehicle:
    2016 Tundra Crewmax Limited 4WD
    Mostly stock/TRD accessories/Morimoto XBs
    Lol.. Yeah, well you better make HAL happy and bump your pressure up.
    I'd be thrilled to have a readout like that, I just have a dummy light.
     
    TurboGoKart likes this.
  3. Oct 6, 2019 at 8:14 AM
    #3
    Mr Badwrench

    Mr Badwrench New Member

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    Jul 20, 2018
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    Sometimes I swear there is not enough electrical tape in the world to cover up all the nuisance alerts on my dash.
     
    Tierhog likes this.
  4. Oct 6, 2019 at 8:59 AM
    #4
    PowerMan81

    PowerMan81 New Member

    Joined:
    Aug 26, 2019
    Member:
    #35196
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    21
    Nor Cal
    Vehicle:
    2019 Tundra DC SR5 4x4
    It probably has to do with the deadband in the alarm program. It’s usually done to prevent alarm chatter when the value is right around the alarm point. The ones in alarm have gone low enough to go into alarm and not high enough to clear. The ones not in alarm haven’t gone low enough to alarm yet. There could also be rounding issues as well depending on how precise the tire pressure is reported to the computer.
     
    landphil likes this.

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