1. Turn the ignition on (but don't start the car). This powers the changer.
2. Try the normal eject function through the radio. This is usually a button or option on the head unit's display that's related to the CD player.
3. If the radio display shows an error or doesn't respond: Try turning the car's ignition completely off, waiting a few seconds, and then repeating step 1 and 2.
4. Check the radio's manual: Your owner's manual should have specific instructions for troubleshooting CD changer issues.
5. If all else fails: You may need to take your vehicle to a car audio specialist or a Ford dealership. They have tools and expertise to access and potentially repair the CD changer. It's possible the mechanism is jammed or broken.
Important Note: Forcing anything into the CD changer slot is strongly discouraged, as it can damage the mechanism beyond repair.