Introduction
Use this guide to replace the Touch ID sensor in a 2018 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 logic board, you must install a paired Touch ID sensor to retain Touch ID functionality.
