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Passenger Door Smart Key System

Discussion in '3rd Gen. Tacomas (2016+)' started by Victory, Apr 22, 2018.

  1. Apr 17, 2019 at 8:16 PM
    #481
    Victory

    Victory [OP] Well-Known Member

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    The sensor is also the antenna, so signal will reach anywhere the sensor sensor or handle is installed.
     
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  2. Apr 17, 2019 at 8:46 PM
    #482
    caribe makaira

    caribe makaira Well-Known Member

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    upload_2019-4-17_23-46-15.jpg
     
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  3. Apr 18, 2019 at 5:27 PM
    #483
    MAS

    MAS Well-Known Member

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    That’s some good info. Something to think about in the future. Thanks
     
  4. May 1, 2019 at 9:34 PM
    #484
    Sgrif513

    Sgrif513 Well-Known Member

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    Not sure what I'm doing wrong, but it won't work for me. Checked the correct wiring and taps. Tried to even reverse the polarity to make sure everything was set up right. All doors set to unlock. Drivers side still works.
     
  5. May 1, 2019 at 11:12 PM
    #485
    BountyOR_VF2

    BountyOR_VF2 "If in doubt, flat out!"

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    Bad connection. Use the volt meter to check if possible.
     
  6. May 1, 2019 at 11:44 PM
    #486
    Sgrif513

    Sgrif513 Well-Known Member

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    Thanks. I'll check it with the voltmeter and see. I appreciate your help.
     
  7. May 2, 2019 at 2:38 AM
    #487
    seanranger3

    seanranger3 Well-Known Member

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    I would say you did not set your pins in far enough to the handle
     
  8. May 2, 2019 at 5:25 AM
    #488
    Victory

    Victory [OP] Well-Known Member

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    Sean may be on to something here, those pins on your wiring harness you are assembling need to be pushed pretty far into the new connector housing. If you think that is it, use a mini flat head screwdriver to help.
     
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  9. May 2, 2019 at 6:38 AM
    #489
    muffyinva

    muffyinva Well-Known Member

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    Part number for this OEM harness?
     
    Last edited: May 2, 2019
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  10. May 2, 2019 at 6:44 AM
    #490
    DSIM

    DSIM Well-Known Member

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    FYI to those thinking this could work in the tailgate. Not without a LOT of hacking. I bought a handle to to this mod but also wanted to take it apart and see if it'd be feasible to incorporate the internals in or around the tailgate handle.

    The green wire is the touch sensor, that could probably be switched out for a different touch sensor. The lock touch sensors are the metal flanges near the board. Those could also "maybe" be switched out for a different touch sensor.

    20190501_192251.jpg

    But the board is absolutely BURIED. "Potted" for water resistance. Would be some effort to get it out.

    20190501_192046.jpg

    So I guess the point is it "could" be done but with a ton of effort/hacking. And to destroy a $150 handle just to get to the pieces idk. If someone wants to try then great!
     
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  11. May 2, 2019 at 7:23 AM
    #491
    Sgrif513

    Sgrif513 Well-Known Member

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    I actually slid the pins directly onto the terminals of the handle, still nothing. I'll try to troubleshoot again.
    Thank you.
     
  12. May 2, 2019 at 7:31 AM
    #492
    Victory

    Victory [OP] Well-Known Member

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    :confused: Must be a bad connection or even a bad handle, you could try swapping handles with the drivers if you can’t find a bad connection.
    Double check that you are tapped into the correct wire locations on the ecu- sometimes colors can change by year, so wire color on my 2016 could (but probably isn’t) different from your 2019, but the wire location should still be the same.
     
  13. May 2, 2019 at 8:21 AM
    #493
    TacoTruck808

    TacoTruck808 Well-Known Member

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    Lexus SUV’s has a button on the tailgate with a proximity sensor of some sort. Would that be able to connect up to the tailgate to just unlock and lock the tailgate? Of course it would be Lexus parts so it may be a bit pricey.
     
  14. May 2, 2019 at 8:35 AM
    #494
    caribe makaira

    caribe makaira Well-Known Member

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    Show us this LEXUS item...o_O:D
     
  15. May 2, 2019 at 8:41 AM
    #495
    caribe makaira

    caribe makaira Well-Known Member

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    Actually the green wrap wire is an AM antenna...
     
  16. May 2, 2019 at 8:44 AM
    #496
    TacoTruck808

    TacoTruck808 Well-Known Member

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    I can take a picture of the switch on my wifes NX. Its just a soft touch button covered with rubber on the rear tailgate. I just dont know where the proximity sensor is located. It is probably in the tailgate somewhere. When i have some time, i will see if i can find a parts list or something for her car.

    There is one that locks/unlocks the doors and one that opens/closes the tailgate.
     
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  17. May 2, 2019 at 8:44 AM
    #497
    DSIM

    DSIM Well-Known Member

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    I started trying to research that but I could not find it.
     
  18. May 2, 2019 at 8:46 AM
    #498
    TacoTruck808

    TacoTruck808 Well-Known Member

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    I will see what i can find on a Lexus parts site.
     
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  19. May 2, 2019 at 8:52 AM
    #499
    TacoTruck808

    TacoTruck808 Well-Known Member

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    I found this in the manual but will see if i can find some parts for the system.
    0A03FF1C-6DAB-48CB-8DDB-52253E69E050.jpg
    8B40754B-7D66-4E82-A4E2-B4F1806541AF.jpg
     
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  20. May 2, 2019 at 8:54 AM
    #500
    Sgrif513

    Sgrif513 Well-Known Member

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    Thanks. The ecu wires are exactly as you described. Hopefully it's not a bad handle. I'm going to remove the passenger side handle and connect it to the ecu outside of the door to see if I can get it to work. If not, I'll swap or for another handle.
     

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