1. Check the Obvious:
* Fuse: Check your owner's manual to locate the fuse for the power windows. A blown fuse is the easiest fix. Replace it with a fuse of the same amperage.
* Window Switch: Try the switch in multiple positions (all the way up, all the way down, hold). Sometimes a sticky switch can be the culprit. Try the other windows to see if the problem is isolated to the passenger side. If other windows work fine, the switch is likely the problem.
* Door Jam: Make sure nothing is obstructing the window from moving up (like a toy, clothing, or ice).
2. Test the Window Regulator:
* Manual Attempt: With the power off, try gently pushing the window up by hand. If it feels stuck, there's an issue with the window regulator or possibly the window itself. This could be a bent track, broken regulator motor, or a binding mechanism.
* Listen Closely: While attempting to use the switch, listen for any unusual sounds like grinding, clicking, or buzzing. These sounds can indicate a failing motor or regulator.
3. More Advanced Troubleshooting (requires some mechanical skill):
* Check the Wiring: If the switch and fuse are good, you'll need to inspect the wiring harness connected to the window regulator motor. This requires removing the door panel. Look for broken wires, loose connections, or corrosion. A multimeter can help determine if power is reaching the motor.
* Window Regulator Motor: If the wiring is intact and you're hearing a clicking sound, the motor itself might be failing. This likely requires replacing the entire window regulator assembly.
* Window Tracks: If the window feels physically stuck, the tracks might be bent, broken, or obstructed by debris. This often requires removing the door panel to assess the tracks.
Parts and Repair:
* Replacement Parts: You can find replacement window regulator assemblies and switches relatively inexpensively online (e.g., Amazon, eBay, auto parts stores). Make sure to get the correct part for your specific year and model Expedition.
* Repair or Replace: Depending on your mechanical skills and the extent of the damage, you might choose to repair the regulator (if possible) or replace the entire assembly. Replacing the regulator is usually easier than trying to repair it.
Removing the Door Panel:
* YouTube Tutorials: Search YouTube for "2003 Ford Expedition passenger door panel removal." There are many excellent videos showing how to carefully remove the door panel without damaging it. This is crucial because you'll need access to the window regulator and wiring to diagnose the problem.
Important Note: If you're not comfortable working on car repairs, it's best to take your Expedition to a qualified mechanic. Improperly repairing the window mechanism could lead to further damage or injury.