Show a warning when the road could be slippery or icy. For example if the temperature drops below 32 degrees F, then the display should give a warning about possible slippery roads ❄️ 🌧 . Similarly, if rain is detected.
Use weather forecast, or manual mode to maintain cabin_temp > 1°C when freezing rain is happening. Would prevent doors, windows and especially handles from freezing up.
To prevent damage to wiper mechanism switch the wipers to off in freezing temperatures so they do not get damaged when in auto mode and frozen to the windscreen.
Have a button on the screen when temperatures fall below e.g. 4 degrees C to set winter mode: reduce regen brake, chill mode on, and whatever other settings improve safe driving on ice and snow.
-set wipers up higher (like service mode) so the wipers can be kept warm and don't freeze