1. Preparation:
* Gather supplies: You'll need a suitable lubricant (white lithium grease is often recommended, but check your owner's manual for specifics), a trim removal tool (plastic pry tools are ideal to avoid scratching), sockets and screwdrivers (sizes will vary depending on your Expedition's year), rags or shop towels, and potentially a flashlight.
* Consult your repair manual: A specific repair manual for your year and model Expedition will provide detailed instructions and diagrams. This is highly recommended.
* Disconnect the battery: This is a crucial safety step to prevent accidental short circuits.
2. Door Panel Removal:
* Remove interior door panel: This varies significantly depending on the year of your Expedition. Generally, you'll need to:
* Remove the door handle bezel.
* Remove screws located around the armrest and edges of the door panel.
* Carefully pry the door panel away from the door, being mindful of any clips or connectors. Work slowly and use the plastic pry tools to avoid damage.
* Disconnect electrical connectors: Carefully unplug the window switch, power lock, and any other connectors attached to the door panel.
3. Accessing the Window Regulator:
* Locate the window regulator: Once the door panel is removed, you should see the window regulator mechanism. It's usually a complex assembly of gears, motors, and cables.
* Inspect for damage: Check for broken parts, worn gears, or severely damaged cables before proceeding with lubrication. Severe damage might necessitate replacing the entire regulator.
4. Lubrication:
* Apply lubricant sparingly: Use a small amount of white lithium grease or the recommended lubricant. Apply it to the moving parts, focusing on the gears, pivot points, and cable tracks. Avoid over-lubricating, as excess grease can attract dirt and grime.
5. Reassembly:
* Reconnect the electrical connectors: Make sure all connectors are securely plugged back in.
* Reinstall the door panel: Carefully align the door panel and reattach it, ensuring all clips are properly secured.
* Test the window: Operate the window switch to check for smooth operation.
Important Considerations:
* Year-Specific Differences: The process of removing the door panel and accessing the window regulator varies significantly depending on the model year of your Ford Expedition. Consult a repair manual specific to your vehicle.
* Safety First: Always disconnect the battery before working on any electrical components.
* Professional Help: If you're uncomfortable with any part of this process, take your Expedition to a qualified mechanic. Improper repair can lead to further damage.
This is a general overview. Without knowing the specific year and model of your Ford Expedition, providing more precise instructions is impossible. Again, referring to a repair manual specific to your vehicle is absolutely crucial for a successful repair.
