12-volt battery becoming discharged while the vehicle is plugged in during the high voltage charging process
Ford technical service bulletin TSB 21-2091 for 2021 Ford Mustang Mach E.
- Bulletin number
- TSB 21-2091
- Component
- Electrical system
- Summary
- Some 2021 Mustang Mach-E vehicles may exhibit the 12-volt battery becoming discharged while the vehicle is plugged in during the high voltage charging process. This may be due to the parameters in the powertrain control module (PCM). To correct the condition, follow the Service Procedure to reprogram various modules starting with the PCM.
Owners of these vehicles have filed 156 complaints in the electrical category.
Vehicles covered
- Ford Mustang Mach E 2021 2021
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