Does it support the built-in original functions and controls of the vehicle?

Steering wheel controls work for most music player apps. You can perform the basic functions like play/pause or skip soundtracks.

Wheel knob works in factory interface, also can work in the Android menu. in the stock settings, stock launcher and Apple CarPlay. knob works in factory interface, also can work in the Android menu. in the stock settings, stock launcher and Apple CarPlay.