Some 2021 Mustang Mach-E vehicles may exhibit a concern where the vehicle is unable to achieve 100 percent...

Bulletin number

SSM 50300

Component

Electrical system

Summary

Some 2021 Mustang Mach-E vehicles may exhibit a concern where the vehicle is unable to achieve 100 percent state of charge immediately after high voltage (HV) battery module replacement. This may be due to the battery energy control module (BECM) adjusting the cell balance (conditioning) of the battery module and should be corrected within 16 days. If the vehicle otherwise functions as designed with no related diagnostic trouble codes (DTC) setting, this concern will be corrected automatically with no further actions required by the technician.

Owners of these vehicles have filed 156 complaints in the electrical category.