How to perform a master reset

If you experience problems with SYNC^® with MyFord Touch^®, you can perform a master reset. This process erases all stored data, such as call history, text message information, and previously paired phones, and restores your system to factory settings.²⁷

Your vehicle must be in Park and running, not in Accessory mode
Familiarize yourself with the controls in your vehicle
Make a note of any saved Navigation points and other personal data. This process will erase all of your data from SYNC, and will restore SYNC to factory settings
Disconnect any USB devices and SD cards that are connected to your vehicle's media hub. If you have an SD Card Navigation system, be sure to remove the SD card

Using your system’s touch screen, touch Settings, then touch System.
Navigate to the second page of the System menu, then touch Master Reset.
When SYNC prompts you, touch “Yes” to continue.
“Performing scheduled system maintenance…” appears on the touch screen for several minutes.
The home screen reappears. The master reset is now complete.