Google 'car storage' and you'll come across lots of advice. Below is an extreme version of what some say should be done. I've stored many times for the winter. Minimum, IMO, is make sure it's washed and waxed, have clean oil in it, put a breathable cover over it, raise on jack stands (tires don't need to be all the way off the pavement, but most weight should be off them), take the battery out and keep in a warm place. If you're going to be where the car is (i.e. not escaping south for months on end), you could just disconnect the battery as indicated below, reconnect and start it and run it for a few minutes every now and then, to keep at least the engine lubricated, circulate antifreeze, etc..
Before storing the vehicle:- Have the engine oil changed
- Have the engine coolant changed if due during time of storage
- Fill up the fuel tank with the appropriate gasoline for your vehicle
- Wash the vehicle; use high pressure water or steam to clean underneath
- Check underneath the floor mats to ensure the carpet is dry
- If there are any paint chips, have them repaired
When storing the vehicle:- Operate the engine at normal operating temperature* for 15 minutes prior to shutting off the engine
- Disconnect the black negative (-) battery cable
- Leave the parking brake off
- Raise the vehicle on a level surface and place on jack stands or blocks to prevent flat spots on the tires
- If stored in a temperate, ventilated garage, the windows can be left slightly open
- Cover the vehicle
- Operate the air conditioning once a month to ensure proper lubrication
When bringing the vehicle out of storage:- Have the battery charged and reconnect the black negative (-) battery cable
- Check fluid levels and add as needed
- Check for any leaks underneath the vehicle
- Check and inflate the tires to the correct pressure before taking the vehicle off the jack stands or blocks
- After starting the engine, observe the warning lights; if any remain illuminated, have the issue addressed by your dealership as appropriate
- Check the brake pedal for normal feel (height and firmness) before shifting the transmission
- Take the vehicle to your local dealership for general inspection