Comfort and Convenience
At dusk, some occupants like a brighter cabin so they can find keys or a ticket, while others prefer a dimmer interior. Those tastes differ with habit and what they need before stepping out.
Safety and Driver Assistance
At a car park barrier, knowing which button lowers a window and which one unlocks a door keeps the pause orderly. That familiarity is easier to gain while the car is still parked.
Multimedia and Connectivity
A brief call to confirm a school pickup is simpler if the phone can rest nearby rather than being held. Charging, if a socket is present, and music, if used, stay separate from that call.