How do you flip the rear bench seat up to access the tire jack on a 2002 Jeep Liberty?

you can't flip the rear seat up. I believe the proper procedure would be to remove or loosen the rear seat using the bolts on the rear floor pan. They might have carpet flaps covering them. Carefully check the rear floor pan. **On an 02' liberty the tire jack is under the passenger rear seat. There is a knob on the front face. Simply unscrew the knob to remove the jack.**