On certain electric school buses, hardware inside the high-voltage battery could loosen and detach. As a result, the battery could short circuit. If this happens, there could be a loss of power to the wheels and/or the high-voltage battery could overheat.
A loss of power to the wheels could increase the risk of a crash. A battery that overheats can create a fire risk.
Cummins will notify owners by mail and will make arrangements to repair the high-voltage battery.