Discharged high voltage battery

If the high voltage battery has been discharged, the car cannot be started. You can use the car again after charging the high voltage battery with the charging cable. If the low voltage battery has also been discharged, it is not possible to charge the high voltage battery. In this case, you must first jumpstart the low voltage battery. See Discharged low voltage battery. After the low voltage batteryhas been charged, proceed with charging the high voltage battery usingthe charging cable.