I just completed the upgrade of Sync II with My Ford Touch system to sync 3. I bought a sync 3 apim and screen online that came out of a 2016 Ford Escape.
The mounting bracket was exactly the same as the one in the C-Max. Plugged it all in, hooked up to new USB media hub, and I was immediately in business. Climate controls, navigation, radio, and all displays work as they did before.
Apple carplay and Android auto are huge upgrades.
Edited by Telemachus, 23 March 2019 - 07:57 AM.