Check the fluid levels under the hood to make sure they are at the recommended level as per Owner's Manual.
Make sure there is a blanket or two in the trunk for cold weather conditions in winter.
Make sure that you keep the gas tank full in the winter so you don't unexpectedly empty the tank.
Consider purchasing a triangle reflector kit that is weighted on the bottom to help balance the reflectors during high winds. These reflectors store easily in your vehicle, are easy to set-up, and help identify your location, after proper set-up, to emergency responders.