if manual, window regulator. if electric, check fuses, window switch, window motor, window regulator.
On a ( 2000 ) Lincoln Navigator the rear window defroster switch is located in the dash below the headlight switch
Window regulator is probably bad.
Under the window washer tank
The window is not off track. The window regulator is broken. In most cases you will have to replace the window motor and regulator as an assembly.
That almost always means you need a new window regulator.
Maybe its your driver-side window regulator that stopped working.
To install a new window regulator on a MGRZ driver's door, remove the door panel and the wiring attached to the power window mechanism. Remove stereo speaker from the inside door and the window glass. Remove the old window regulator and replace with new.
First thing I would check is the fuse panel. Usually located under the dash.
can probably raise the window/regulator by hand if you can remove the window motor from the regulator
yes
Remove the window motor from regulator. This will free the window for movement.