Some 2021 Mustang Mach-E and F-150 customers may report experiencing a Ford Power-Up software update failure message via the vehicle display and/or FordPass. In addition, some technicians may experience the inability to update the accessory protocol interface module (APIM) or telematics control unit (TCU) using the Ford Diagnosis and Repair System (FDRS) and Universal Serial Bus (USB) drive. It may also be observed on the PTS - Over The Air (OTA) dashboard that multiple APIM and/or TCU updates have failed, or a no OTA history message is displayed. This may be due to a internal software error. To correct this condition, follow the Service Procedure to recover the APIM/TCU.
