Open the car’s phone (dialer) app and enter the code below. It unlocks TestTool, where you can enable USB debugging and ADB.
Dialer code
*#91532547#*
Reported to work reliably on Dilink 3 and 4.
For QR scanning, use the BYDOTA QR assistant — download
Generate Secret
Source: github.com/ahmada3mar
Verification code
Source: bydota.crazyurus.com/code