Occurred during the manufacturing process

Bulletin number

25B31

Component

Electrical system

Summary

Certain 2024 Model Year Transit Electric Vehicles High Voltage Battery Array Inspection and Replacement On the affected vehicles, incomplete sealing of a cell in the high voltage battery may have occurred during the manufacturing process. Incomplete sealing of a high voltage battery cell may lead to an electrolyte leak, resulting in an isolation fault or low battery module voltage condition. Initially, the operator may observe a wrench light and will not experience any change to drivability. Over time, the condition may progress to a no-start condition, or reduced power with wrench and turtle warning lights. Eventually, the operator may experience a “Stop Safely Now” message followed by a loss of propulsion

Owners of these vehicles have filed 5 complaints in the electrical category.