Where is the factory auto jack located on a 1998 Lincoln Navigator?

The factory auto jack on a 1998 Lincoln Navigator is typically located in a compartment under the cargo area floor. You'll likely need to remove a panel or carpet section to access it. Check for a hinged panel or a section that seems designed to be lifted or removed. The jack, along with the lug wrench and owner's manual (which should detail its location) are usually stored together.