Введение
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.
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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.
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Use a P5 driver to remove the following screws:
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Two 7.9 mm screws
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Two 7.1 mm screws
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Six 2.6 mm screws
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Wedge your fingers between the display and the lower case and pull upward to pop the lower case off the Air.
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Remove the lower case.
Are there any suggestions to removing the pressure fasteners more easily?
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Peel back the tape covering the battery connector enough to reveal the connector underneath.
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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.
This seems like an important step?
Also, seems like this should be done after the battery is disconnected, not before? Otherwise, wouldn’t the battery re-charge it?
What if the white LED dosent light up after pressing the yellow button again?
Iron05 -
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!!
I didn't see Aaron's comment before completing the battery replacement. Afterwards, the computer would not turn on despite multiple SMC reset procedures. Upon double-checking the comments I see the importance of pressing the gold button. I pressed the gold button before disconnecting the new battery, then pressed it again after reconnecting for good measure. Computer booted!
It would be good of iFixit to add this important step as most people probably don't open up every single comment on (seemingly) simple steps.
Seconding Corey's comment. If paid more attention to the comment section, I would have avoided 15-30 minutes of panic. (BTW I did not notice any LED, but the golden button was easy to find).
Where is the gold button? I replaced my battery and my laptop will not start
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Slide the tip of a spudger underneath the speaker cable and pry straight up to disconnect the speaker.
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Use a T3 Torx driver to remove the three 1.4 mm screws securing the audio board cable bracket.
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Remove the cable bracket.
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Use the flat end of a spudger to pry the audio board connector straight up and disconnect it.
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Use the flat end of a spudger to pry the Touch ID sensor connector straight up and disconnect it.
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Remove the following screws:
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Two 4.3 mm, T5 Torx screws
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One 2.4 mm, T3 Torx screw
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Slide the flat end of a spudger underneath the Touch ID sensor cable to slice through the adhesive securing it to the audio board.
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Use a T3 Torx driver to remove the six 1.6 mm screws securing the Touch ID sensor and its bracket.
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Remove the Touch ID bracket.
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Turn the MacBook right-side up and open the display.
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Lift the Touch ID sensor sensor out of its recess and remove it.
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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.
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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4 Комментариев
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.
Can you still use the power button with a touch id replacement?
yes, it will power the machine up!
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 - Ответить
I agree, why disable Auto-Boot when the lid is closed and the battery is disconnected immediately? – I've never had an issue since 2016 when the feature was introduced.
stevebsiegel - Ответить
On my machine, the longest two screws were in the corners, while the other two long screws were in the middle. Perhaps previous service in the past had them replaced into the wrong place? In any case, the longest screws do seem to fit in either place. I guess 0.8mm is not very much of a difference. Seems like poor design if they could have used one size of screw.
johann beda - Ответить
Just did one, and it also had longest screws in the corners.
maccentric -
Just did another, and the long ones were in the middle. Definitely poor design and quality control.
maccentric -