Some 2021 F-150 vehicles built on or before 22-Jul-2021 at Dearborn Truck Plant or 2021 F-150 vehicles built on or before 07-Oct-2021 at Kansas City Assembly Plant may experience the IPC reboots during an incoming or outgoing cell phone call when a cell phone is connected to the SYNC 4 system. This may be due to the software in the IPC. To correct the condition, follow the Service Procedure to reprogram the IPC.
