Comfort and Convenience
The on-board computer acts on the instrument cluster display, where it presents readings drawn from vehicle sensors. It changes what the driver reads rather than how the car behaves, so nothing mechanical responds to it.
Safety and Driver Assistance
Hill start assist addresses a vehicle stopped on a gradient. It briefly holds brake pressure after the pedal is released, covering only the moment of pull-away before releasing regardless of what follows.
Multimedia and Connectivity
A USB connection describes the physical socket, not what a given device will do through it. Whether a phone charges, plays audio or is ignored depends on the audio system's supported protocols.