I believe the problem is the same with all of the Fords. My 2004 Explorer had the same problem with the windows not working. I found that the wire had worn out front he opening and closing of the driver's door and the wire had to be repaired or replaced that runs from under the hood to the front driver's door.
Relay being activated
Your switch is bad or the window motor has gone out
how to put a power window back on track on a 1991 ford f150
behind rear seat
The 2008 Ford F150 doesn't have a vent window. They do come with a Vent visor so that you can roll your window down a little bit without being in the elements, a replacement will cost you about $50.
Check your fuses, check for power going into the window motor, exc.
Ignition relay is probably shot. It is in the power distribution block in the motor comprtment.
more than likely
Under dash in fuse panel; Relay Switch #2 (On left, second from top)
window regulator cable is broken need new regulator
What question
Click on the link below Click on Owner Guides The Owner Guide ( which includes the fuse diagrams ) can be viewed online