Abstract: A thermal control system is configured to transfer heat between refrigerant and coolant. A coolant distribution system includes one or more pumps and valves that are configured to control coolant flow to selectively heat and/or cool a vehicle cabin and/or vehicle components. Measured pump and valve operating parameters may be utilized to repeatedly update metrics that model the states of the pumps and/or valves. Anomalies may be detected by comparing the updated metrics to expected metrics. An alert concerning impending operating issue may be provided based, at least in part, on detected anomalies. A remaining useful life (RUL) of the pumps and/or valves may be determined based, at least in part, on detected anomalies.