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TPMS in spare?

Discussion in '3rd Gen. Tacomas (2016+)' started by udrunk2002, Jul 27, 2020.

  1. Jul 31, 2020 at 5:33 PM
    #61
    Outdoorsy_Yota

    Outdoorsy_Yota Hella-Known Member

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    duhbondo JIW Local 378
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    *** Update***

    @Smacky2020 no explosion.... yet....

    Rotated in the 5th wheel (spare) to the front right.... I took the front right tire and put it far in the garage....

    I turned the truck to ignition on and pressed the TPMS button below the steering wheel/dash until the tpms dash light slow blinked three times....

    I turned on the truck and no tpms light and pressures have double dashes as values....*before anyone quotes the damn manual like a true armchair warrior* I drove how a normal person would drive after resetting the light and getting on with their life..... I drove surface streets for about 15min.... got on the highway for 5-10 and drove straight home.... pressure values have not come up yet, but I don’t think it has gone through it’s cycle....

    I parked it in the driveway and I’ll drive it again later. I’m not getting my hopes up....
     
    RobP62 likes this.
  2. Aug 1, 2020 at 9:05 AM
    #62
    RobP62

    RobP62 Bla Bla Bla

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    I tried this and the jack tilted really bad (I had it under the smittybuilt beavertail) and then I ultimately snapped the sensor. I suppose I needed to be away from it like you show in your pic.
     
  3. Aug 1, 2020 at 9:06 AM
    #63
    RobP62

    RobP62 Bla Bla Bla

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    Damn! That sucks!

    :popcorn:
     
    Outdoorsy_Yota likes this.
  4. Aug 1, 2020 at 12:50 PM
    #64
    Smacky2020

    Smacky2020 Well-Known Member

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    Stock wheels and suspension. Random "utilitarian" mods featured on this great forum.
    Did it end up resynching on its own or did you have to sequentially re-register your wheels?
     
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  5. Aug 1, 2020 at 1:53 PM
    #65
    Outdoorsy_Yota

    Outdoorsy_Yota Hella-Known Member

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    duhbondo JIW Local 378
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    Okay fellas....


    Truck never threw a TPMS light but the pressures never appeared on the dash... I drove a lot this morning....

    I said screw it and I used my tool and “relearned” positions, it all worked... more importantly, proved the MX sensor is read and recognized by the truck/ECU


    Currently I have two NON-OEM sensors on the truck and my tool was able to write the ID’s to the ECU without a problem. One TPMS is from Orielly’s Auto Parts and the tool was able to write that one no problem.... the MX-TPMS needed programming since it is a universal tpms.... the tool was able to do that no problem.

    Verdict?!

    Tacomas only have 4 slots of TPMS memory.... programming the 5th will NOT allow you to “relearn” tires after full spare rotation by simply using the tpms button on dash.... sorry


    While the tools require you to scan a 5th (Spare) TPMS and the ECU “learns” 5 sensors.... when you extract the info, it only calls out 4 slots of memory.... I can’t explain it and it really doesn’t matter to me anymore.... I have the tool and it is exactly doing what I need it to do.

    if you guys want to save money, I highly recommend the Autel TS508.... in retrospect, I would have paid the additional $250 for the All-in-one tool to read Engine trouble codes and diagnostics, but I’m okay with keeping my bosh for the motor and this for the tpms

    If anyone is near the Bay Area, CA.... I hella don’t mind relearning all your tires for ya.... it really is that easy and I wouldn’t charge shit....

    Photos for reference, my dudes.... the screen is really clear in reality, the frame rate on the camera did not play well with the refresh rate of the screen

    first two photos are the Autel MX Sensor... hella high quality... felt OEM

    photos 3/4 are what the parts store tpms look like. They don’t need programming but you do need to “relearn” them.... which.... means.... programming? It’s dumb....

    and notice on the final relearn.... the sensors, their ID’s and positions on the left.... ECU ID’s (they match when relearned) on the right.... see? Asked for 5 and only shows 4

    B0AE2B5A-32CF-48CF-B15A-A339A0A15E34.jpg
    8F378B5A-2919-48EE-8A73-F1E95A429F2F.jpg
    254D8F5A-83A7-4F03-9457-B097B2C7FEFB.jpg
    63BBA08A-CCA1-4DD4-BD80-4E52802CB4BB.jpg
    E207EA0E-D07F-4835-818F-C22336BB5F47.jpg
    5439FBA2-BAD3-4ACB-93B2-5E5A0A0B5D07.jpg
     
  6. Aug 1, 2020 at 7:54 PM
    #66
    Smacky2020

    Smacky2020 Well-Known Member

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    Stock wheels and suspension. Random "utilitarian" mods featured on this great forum.
    Thanks for posting results and sucks the truck system is only so smart. The autel looks like a nice tool if you're swapping tires/sensors.

    :cheers: for the common good. Stay safe out there. Lots of lunatics claim trucks magically know where your tires are at...
     
    Outdoorsy_Yota likes this.
  7. Aug 1, 2020 at 9:43 PM
    #67
    Outdoorsy_Yota

    Outdoorsy_Yota Hella-Known Member

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    :thumbsup:
     
  8. Aug 2, 2020 at 7:56 AM
    #68
    knayrb

    knayrb Well-Known Member

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    TPMS on the spare isn’t that important to me. It’s just along for the ride and never has a chance to get a puncture. I flipped my spare upside down so the valve is accessible. Every few months I’ll put a gauge on it to see if it’s still holding air. I’ve had my 2nd gen for 11 years and have never needed to use the spare. Sitting under the truck it just doesn’t have rubber rot.
     
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  9. Aug 2, 2020 at 11:03 AM
    #69
    Outdoorsy_Yota

    Outdoorsy_Yota Hella-Known Member

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    duhbondo JIW Local 378
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    Understood. Some of us wheel hard and the spare in the stock location will get tagged eventually.... and people like me, with a spare in a carrier, will carry a full size spare and rotate it in.... it just makes sense.... if you’re rotating in a spare.... this info is useful.....

    if you’re not using the baby dick spare..... then yeah, what you’re saying makes sense. Happy trail :)
     
  10. Aug 2, 2020 at 4:27 PM
    #70
    JStarr

    JStarr Life Off the Road

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    Thanks for the explaining, testing and posting. Now we know!
     
    Outdoorsy_Yota likes this.
  11. Aug 2, 2020 at 4:39 PM
    #71
    daveeasa

    daveeasa Well-Known Member

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    I received my OEM 5th OR wheel today. Haven’t unboxed it yet. Waiting on TPMS sensor then planning to swap out my spare for 5 wheel rotation. Probably stuck paying a shop to do it though as I don’t have jacks and my driveway is pretty sloped plus lots of foot traffic on the sidewalk.
     
    Outdoorsy_Yota likes this.

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