Comfort and Convenience
The on-board computer matters mid-journey: it gathers trip data such as consumption, range and averages, so decisions about when to refuel or ease off the pace rest on the car's own readings rather than guesswork.
Safety and Driver Assistance
Once the driver's braking or steering input leads to a collision, the passenger airbag is triggered by crash sensors and inflates in front of the front passenger, spreading deceleration across the torso and head instead of the dashboard edge.
Multimedia and Connectivity
The 12V power outlet supplies the cabin's accessory current, so it serves the supporting role in a media setup: running or charging a phone, adapter or dashcam that feeds the audio system rather than producing sound itself.