Check the vehicle's battery level and ensure the gas tank is full. Throughout the night you will turn on your Jeep to run the heater; this requires gas. You will not want to find your vehicle without gas in the morning. Your battery will support some necessities throughout the night and must have enough energy to start the vehicle in the morning.
Leave your Jeep idling throughout the night with the heater running. The Jeep Cherokee is designed to handle this kind of work and you need the heat within your vehicle. This uses gas but your health must be your highest concern.
Bring food that does not require cooking. The Jeep Cherokee provides ample inside-space for storage and this ensures you can avoid exiting the vehicle for cooking and eating. Utilize the rear space in your Cherokee for trash bags and storage.
Roll up your windows as you settle down for the evening. Plug in electric blankets into your cigarette-lighter sockets or use thick survival blankets. Lock all doors. Turn off excess electronics. These things unnecessarily drain your battery.
Stretch out on the rear seats. These seats have pull-down arm rests in the Cherokee, allowing you to lie down if you leave the arm rests in the up position. If you are still cold, lie close to another passenger. Body heat warms you both -- especially with a thick blanket over the two of you.
