Jeep 2016 Wrangler Owner's Manual page 580

578 WHAT TO DO IN EMERGENCIES
2. Loosen (but do not remove) the wheel lug nuts by
turning them to the left one turn while the wheel is
still on the ground.
3. Assemble the jack and jacking tools. Connect the jack
handle driver to the extension, then to the lug wrench.
4. Operate the jack from the front or the rear of the
vehicle. Place the jack under the axle tube, as shown.
Do not raise the vehicle until you are sure the jack is
fully engaged.
Front Jacking Location