Apple Mac Book Air 2018 comes along with the T2 security chip. While this is a good addition to the MacBook, it blocks out the third-party repairs on your laptop. Note that the T2 security chip on the MacBook’s offer features including the “Hey Siri” and Touch ID feature.

Reports confirm us that the T2 security chip performs a series of diagnostics test on the first boot after changes are made on the hardware components. Well, if the hardware doesn’t come from Apple, it bricks the whole device making it unrepairable.

Apple's T2 chip won't allow third-party repairs on your new MacBook

According to an official Apple document, the replacement parts must be within the ASP (Authorized Service Provider) network. Also, the person who repairs the laptop needs to run a software diagnostics tool. Note that only the ASP centers or Apple Store have access to. The official Apple document lists the components including the logic board, top case, and Touch ID for the MacBook Pro and Flash storage for the iMac Pro. Make a note on these components as these are not eligible for third-party replacements.
The same applies to the newly released MacBook Pro and Mac mini.

Well, this is another step for the company to ensure market sales, as it seems to be a major attempt to grab some market share from third-party repair services.