1. Identify the Problem:
* No power at all: The window doesn't move at all when the switch is pressed. This suggests an electrical issue.
* Intermittent operation: The window works sometimes, but not others. This could be a loose connection or a failing part.
* Slow operation: The window moves very slowly. This points to a weak motor or a binding mechanism.
* Window only goes down/up: The window moves in one direction but not the other. This often indicates a problem with the regulator or motor.
* Switch issue: The problem may lie in the switch itself.
2. Troubleshooting Steps:
* Check the Fuse: Consult your owner's manual to locate the fuse for the power windows. Replace it if it's blown.
* Check the Switch: Try the other rear window switch (if applicable) to see if the problem is with the switch or the window mechanism. You can also try spraying electrical contact cleaner into the switch (carefully!).
* Check the Wiring: Carefully inspect the wiring harness connecting to the motor and switch for any breaks, loose connections, or corrosion. This often requires removing the door panel.
* Listen for Motor Sounds: When you press the switch, listen carefully near the door. You should hear a slight hum from the motor if it's working. No hum indicates a motor problem or a lack of power.
* Inspect the Window Regulator: The window regulator is the mechanism that moves the window. If it's broken or jammed, the window won't move. This usually requires removing the door panel.
* Check for Obstructions: Ensure nothing is blocking the window from moving.
3. Repair Options:
* Replace the Fuse: The easiest fix.
* Replace the Switch: Relatively inexpensive and easy to replace if you're comfortable with basic car repair.
* Repair or Replace the Wiring: This can be more challenging, requiring some electrical knowledge. May involve soldering or splicing wires.
* Repair or Replace the Window Regulator: Often the most expensive and difficult repair. You'll likely need to remove the door panel and potentially the window itself. You might be able to repair a broken regulator, but replacement is often more practical.
* Replace the Window Motor: Similar difficulty to replacing the regulator.
4. Removing the Door Panel:
This is necessary for accessing the window regulator and motor. Search online for "Ford Focus [Year] rear door panel removal" to find videos and instructions specific to your car's year and model. This is often a delicate process, so take your time and be careful not to damage any clips.
5. Professional Help:
If you're not comfortable with car repairs, or if you've tried troubleshooting and can't find the problem, take your car to a qualified mechanic. They have the tools and experience to diagnose and fix the issue efficiently.
Important Notes:
* Year and Model Matter: The specific repair process will vary slightly depending on the year and model of your Ford Focus. Be sure to search for information specific to your vehicle.
* Safety First: Always disconnect the battery's negative terminal before working on any electrical components in your car.
* Parts: When replacing parts, ensure you purchase the correct ones for your specific Ford Focus model.
By systematically following these steps, you can hopefully diagnose and fix your rear power window problem. Remember to consult your owner's manual and search online for tutorials specific to your Ford Focus year and model.
