An automotive battery module with one or more battery cells and a coolant loss detection and remediation system cooperative with coolant that is configured to provide thermal management of the battery module. Coolant levels in or around the battery module may be detected, while cooperation with a controller permits corrective action in the event that a leakage of coolant is detected. The controller senses a coolant level sensor which is located in a coolant reservoir to determine when the coolant level drops below a predetermined level. When the coolant level is determined to be low, the controller reports the low level condition and takes remedial action. The controller also has a set of enablement conditions that must be satisfied before the controller senses the coolant level sensor.