Comfort and Convenience
Cabin temperature is a common point of difference: one passenger feels comfortable in cooler air while another prefers it warmer. Body size, clothing and where someone sits relative to vents all shape that preference.
Safety and Driver Assistance
Spending a few minutes with lights, wipers, mirrors and hazard switches before setting off means less searching later. Knowing where things sit lets a driver keep attention on the road rather than the dashboard.
Multimedia and Connectivity
Keeping a phone charged on a long trip is its own need, separate from calls or music. Where charging is available, passengers usually want to know which socket or port is intended for that purpose.