VCI: the bridge between the diagnostic computer and the car

Useful to know

A vehicle communication interface, or VCI, connects diagnostic applications on a computer with the car's electronic blocks. Bosch describes it as a communication component for various automotive architectures. [1]

This does not mean that the adapter itself contains all the diagnostic procedures and permissions. Software, supported protocols, and access to specific functions are separate terms. When purchased, compare the compatibility with the car and the application, not just the shape of the connector. Physical inclusion to the diagnostic box does not guarantee coding, programming, or all service operations.