RECHARGEABLE ENERGY STORAGE SYSTEM LIQUID INTRUSION DETECTION AND SEVERITY DETERMINATION FOR HIGH VOLTAGE OPERATION

A vehicle includes a system performing a method of operating the vehicle. The system includes a battery pack, a sensor associated with the battery pack, a cooling system for cooling the battery pack, and a processor. The processor is configured to measure a battery pack parameter of the battery pack for an occurrence of a battery pack fault, measure a sensor parameter for the occurrence of a sensor fault in the sensor, measure a cooling system parameter of the cooling system for the occurrence of a cooling system fault, determine an ingress of a fluid into the battery pack based on the occurrence of the battery pack fault and one of the sensor fault and the cooling system fault, and perform an action based on the ingress of the fluid into the battery pack.