Comfort and Convenience
Preferred cabin temperature varies widely from person to person. Someone who runs warm may want cooler air than the passenger beside them, so a setting one occupant finds pleasant can feel wrong to the next.
Safety and Driver Assistance
Before a first journey it helps to check where the hazard switch, horn and headlight controls sit. Knowing them by position, rather than reading labels while already moving, is straightforward preparation and costs only a minute.
Multimedia and Connectivity
Taking a call is a different need from listening to music. Where hands-free telephony is provided, it usually interrupts audio for the duration of the conversation; charging remains separate again, a question of keeping the battery topped up.