Some things that I personally have have had to do include adjusting the HVAC to have full output on the windscreen on a hot setting, enable the rear demister / mirror heaters or turn the hazard lights on. The windows or mirrors steaming up is a visibility issue and is dangerous if you allow it to occur.

This may not be needed at the start of the drive if people's breath gradually steams up the windows or the weather changes. I have noticed that passengers from warmer climates probably don't have the same problems as they didn't understand this and were complaining at me to turn the fan off.

Though I always buy cars with physical buttons that are in ergonomic places and wouldn't buy something with a touch screen. I am also not sure how a touch screen would work with the thin gloves that I wear in winter when driving to work in the early morning.