Some 2013-2017 C-MAX Energi, 2013-2018 Focus battery electric vehicle (BEV), 2013-2020 Fusion plug-in hybrid electric vehicle (PHEV), 2015-2017 MKZ/MKZ Hybrid/MKC, 2016-2017 MKX and 2017 Continental vehicles equipped with SYNC screens 8 inch or larger may be unable to complete modem authorization after 3G to 4G modem upgrade was performed. No Authorization Popup will be displayed on SYNC infotainment screen during the Authorization process. The vehicle may also not have proper functionality of remote app features such as remote start, and return odometer and fuel information to the app. This may be due to the SYNC software. To correct the condition, follow the Service Procedure to toggle Valet Mode.
