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Introduzione

Use this guide to replace the Touch ID sensor in a 2019 MacBook Air.

Note that Touch ID will not function after replacing the Touch ID sensor. The MacBook’s original Touch ID sensor is uniquely paired to the T2 chip on the logic board at the factory—and without Apple’s proprietary calibration process, even a genuine replacement Touch ID sensor from another MacBook Air won’t work.

If you replace the Touch ID sensor, you must install a paired logic board to retain Touch ID functionality.

  1. Before starting this procedure, you should disable your Mac's Auto Boot feature. Auto Boot powers on your Mac when you open the lid, and may be accidentally triggered during disassembly. Use this guide to disable Auto Boot.
    • Before starting this procedure, you should disable your Mac's Auto Boot feature. Auto Boot powers on your Mac when you open the lid, and may be accidentally triggered during disassembly. Use this guide to disable Auto Boot.

    • If your MacBook is running Big Sur v11.1 or later, disabling Auto Boot may not work. You can proceed normally, but make sure to disconnect the battery as soon as you're inside.

    • Completely power off and unplug your MacBook Air before you start. Close the display and flip the entire laptop upside-down.

    • Use a P5 driver to remove the following screws:

    • Two 7.9 mm screws

    • Two 7.1 mm screws

    • Six 2.6 mm screws

    If the first thing you do is disconnect the battery, is it really an issue if you don’t (or can’t) disable auto-boot?

    maccentric - Replica

  2. Wedge your fingers between the display and the lower case and pull upward to pop the lower case off the Air.
    • Wedge your fingers between the display and the lower case and pull upward to pop the lower case off the Air.

    • Remove the lower case.

  3. Peel back the tape covering the battery connector enough to reveal the connector underneath.
    • Peel back the tape covering the battery connector enough to reveal the connector underneath.

  4. Use a spudger to slide the battery connector parallel to the logic board and out of its socket on the logic board. Use a spudger to slide the battery connector parallel to the logic board and out of its socket on the logic board.
    • Use a spudger to slide the battery connector parallel to the logic board and out of its socket on the logic board.

    Before the battery can be fully disconnected, the battery disconnect button needs to be held down. There is a gold button just above the battery socket, along with a small LED much like the 12” machines. Once this has been held down and the LED has switched off it is safe to remove the battery.

    Aaron Dalziel - Replica

    This seems like an important step?

    maccentric -

    Also, seems like this should be done after the battery is disconnected, not before? Otherwise, wouldn’t the battery re-charge it?

    maccentric -

    I just performed this repair on my late 2018 mac air. I did click the gold button but saw no LED illuminated or otherwise. Question- after reassembly does the button get pressed again to connect the battery? Please clarify if this button is to be pressed and if it needs pressing again after the repair.

    All said - I pressed again after the battery connector clicked, assembled the back and all worked perfectly. The original issue was one dead port (no charge, no communication). The battery charge lightening bold icon was acting funny too. Genuis bar guy in Naperville said it was likely a logic board too. But it was not. The port was apparently confusing the logic board with regards to the charge function. Thanks Adam for saving me $440 and sending my computer back to Apple. I am 71 yrs young - who says an old dog can’t learn new tricks with good training!!

    William Lane - Replica

  5. Slide the tip of a spudger underneath the speaker cable and pry straight up to disconnect the speaker. Slide the tip of a spudger underneath the speaker cable and pry straight up to disconnect the speaker.
    • Slide the tip of a spudger underneath the speaker cable and pry straight up to disconnect the speaker.

  6. Use a T4 Torx driver to remove the three 1.4 mm screws securing the audio board cable bracket. Remove the cable bracket.
    • Use a T4 Torx driver to remove the three 1.4 mm screws securing the audio board cable bracket.

    • Remove the cable bracket.

  7. Use the flat end of a spudger to pry the audio board connector straight up and disconnect it. Use the flat end of a spudger to pry the audio board connector straight up and disconnect it.
    • Use the flat end of a spudger to pry the audio board connector straight up and disconnect it.

  8. Use the flat end of a spudger to pry the Touch ID sensor connector straight up and disconnect it. Use the flat end of a spudger to pry the Touch ID sensor connector straight up and disconnect it.
    • Use the flat end of a spudger to pry the Touch ID sensor connector straight up and disconnect it.

  9. Remove the following screws:
    • Remove the following screws:

    • Two 4.3 mm, T5 Torx screws

    • One 2.4 mm, T4 Torx screw

    In my case, the audio board was mounted with two 4.3 mm T4 screws and one 2.4 mm T3 screw.

    benston - Replica

  10. Slide the flat end of a spudger underneath the Touch ID sensor cable to slice through the adhesive securing it to the audio board.
    • Slide the flat end of a spudger underneath the Touch ID sensor cable to slice through the adhesive securing it to the audio board.

  11. Remove the audio board.
    • Remove the audio board.

  12. Use a T3 Torx driver to remove the six 1.6 mm screws securing the Touch ID sensor and its bracket. Remove the Touch ID bracket.
    • Use a T3 Torx driver to remove the six 1.6 mm screws securing the Touch ID sensor and its bracket.

    • Remove the Touch ID bracket.

  13. Turn the MacBook right-side up and open the display.
    • Turn the MacBook right-side up and open the display.

    • Lift the Touch ID sensor sensor out of its recess and remove it.

Conclusione

Compare your new replacement part to the original part—you may need to transfer remaining components or remove adhesive backings from the new part before installing.

To reassemble your device, follow the above steps in reverse order.

Take your e-waste to an R2 or e-Stewards certified recycler.

Repair didn’t go as planned? Check out our Answers community for troubleshooting help.

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Adam O'Camb

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Un commento

Hold on so you can replace the touch id but you wont be able to use it? lol kind of redundant if you ask me.

Hamdi Hoxha - Replica

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