Comfort and Convenience
Cabin temperature is one preference that rarely matches between travellers. Some people stay comfortable in cool air while others feel a draught quickly, so agreeing on a setting early avoids repeated changes later.
Safety and Driver Assistance
Learning where the essential controls sit, among them lights, wipers, demisting and the hazard switch, is best done while parked. Searching for them at speed or in rain divides attention the road already demands.
Multimedia and Connectivity
Keeping a phone charged matters most when it carries the route. If a suitable cable or wireless pad is available, plugging in early keeps navigation running, separately from whatever calls or music follow.