1. Check the Obvious:
* Manual Override: Some Ford models have a manual crank for emergency window operation. If your Sport Trac does, try using it to close the window. If it works, the problem is likely electrical.
* Obstacles: Is anything obstructing the window's path (ice, debris, etc.)? Carefully check for anything jamming the window's movement.
* Fuse: Check the fuse box (usually under the hood or under the dash) for a blown fuse related to the power windows. Your owner's manual will show the fuse layout.
2. Electrical Checks (Requires Basic Electrical Knowledge):
* Switch: Try using the passenger-side window switch to see if you can operate the driver's side window. If it works, the problem is likely with the driver's side switch.
* Wiring: This is more involved and requires some electrical knowledge. Inspect the wiring harness leading to the driver's side window motor for any visible damage, fraying, or disconnections. Pay close attention to where the wires enter the door. These wires are often pinched or damaged by the door flexing.
* Window Motor: With the door panel removed (see step 3), you can try applying 12V directly to the window motor's terminals (use caution! Incorrect polarity can damage the motor). If it runs, the problem is elsewhere (switch, wiring).
3. Accessing the Window Regulator and Motor:
* Remove the Door Panel: This requires removing screws and possibly plastic clips. Search YouTube for "2001 Ford Sport Trac driver side door panel removal" for a visual guide. Be careful not to break any clips.
* Inspect Regulator and Motor: Once the panel is off, you can visually inspect the window regulator and motor for any obvious damage. Look for broken plastic parts, stripped gears, or anything that seems out of place.
4. Possible Solutions (Depending on the Findings):
* Replace the Switch: If the switch is faulty, it's relatively inexpensive and easy to replace.
* Repair or Replace the Regulator: This is the most common culprit. You might be able to repair a damaged regulator (replace broken plastic parts, lubricate gears), but often replacing the entire unit is necessary.
* Repair or Replace the Motor: Less common than regulator issues, but possible.
* Repair Wiring: If you find damaged wiring, you may need to repair or replace the affected sections. This usually requires some electrical skills and soldering.
Important Considerations:
* Safety: Disconnect the battery's negative terminal before working with electrical components.
* Professional Help: If you're not comfortable working on your vehicle's electrical system, take it to a qualified mechanic. Improper repairs can lead to further damage.
* Parts: You can find replacement parts (switches, regulators, motors) online or at auto parts stores. Make sure to get parts specifically for your 2001 Ford Sport Trac.
Start with the simplest steps. If the problem persists after checking fuses and switches, you'll likely need to remove the door panel to investigate the regulator and motor. Remember to consult online resources (YouTube videos, repair manuals) for visual guidance.
