WARNING: This page is about a different car, the 2017 Ford Police Interceptor Utility and 2017 Ford Explorer. However, it is still accessible from the selected car via links, so may be relevant.
1.
Using a non-marring tool, position the HUD up.
Use the General Equipment: Interior Trim Remover
Courtesy of FORD MOTOR COMPANY
2.
Disconnect the electrical connector and remove the HUD.