Comfort and Convenience
A keyless entry system decides whether the doors unlock at all, recognising the fob carried nearby. That authorisation step is separate from the settings a driver then chooses inside, such as the climate control temperature.
Safety and Driver Assistance
Automatic slip regulation acts on a driven wheel that spins faster than grip allows during acceleration, while the anti-lock braking system intervenes in the opposite case, when a wheel threatens to lock under braking.
Multimedia and Connectivity
Audio preparation covers the wiring and speaker mounting that carry an amplified sound signal to the cabin, the physical path any source uses, whether the music arrives over Bluetooth, USB or the AUX input.