VEHICLE TEMPERATURE CONTROL SYSTEM

A vehicle temperature control system includes: a first temperature control circuit; a second temperature control circuit; a heat exchanger in which heat exchange between a first temperature control medium and a second temperature control medium is performed; and a control device. The control device is capable of controlling a flow rate control valve based on a temperature of the first temperature control medium and a temperature of the second temperature control medium. In a case where the temperature of the first temperature control medium is lower than the temperature of the second temperature control medium, the control device controls the flow rate control valve such that a flow rate to a second branch flow path is larger than a flow rate in a case where the temperature of the first temperature control medium is higher than the temperature of the second temperature control medium.