To Soft Reset your Sync 3 system; SIMULTANEOUSLY (at the same exact time) press the Scan Forward button (>>) and the CENTER power button (audio system power) and HOLD them in for a little more than 10 seconds.
If you are experiencing any issues with your system the first thing to do is a soft reset. This is similar to doing a soft reset on your cell phone. 1) Put your vehicle into the accessories mode (ACC or RUN) **For key-less start (push-button) ...
To switch from Carplay to the Sync 3 Interface, you hit the "apps" button the bottom right corner when Carplay is active. Then hit the Ford Sync App that is listed under the apps listing. That will take you back to the Ford Sync 3 interface.
If your unit is doing something that isn't correct, you can try and do a master reset on the unit, this will fix most issues: Go to the Settings and you should see Reset to Factory Defaults/Factory Data Reset, press this option. (If you do not see ...