Why is my sync screen black?
What is a Blank/Black Screen? A blank/black screen on a SYNC 3 equipped vehicle is defined as the Front Display Interface Module (FDIM) having no image while the ignition is on. This may be an event that takes place for as little as a fraction of a second, or may persist as a hard fault.
How do I turn my Ford screen back on?
Why did my sync stopped working?
Try switching off your cell phone, resetting it or removing the battery, then trying again. Try deleting your device from SYNC and deleting SYNC from your device, then trying again. Always check the security and auto accept prompt settings relative to the SYNC Bluetooth connection on your cell phone.