Cooling modes to manage a high voltage battery for a vehicle

A vehicle comprising:

• a traction battery;
• a thermal management system including:
• a coolant circuit comprising a radiator, a chiller, a first valve, and a pump configured to move coolant through the coolant circuit by selectively incorporating one of the radiator and chiller based on a position of the first valve, and
• a refrigerant circuit comprising the chiller, an evaporator, a condenser, a second valve, a third valve, and a compressor configured to move refrigerant through the refrigerant circuit by selectively incorporating one of the chiller and evaporator based on positions of the second and third valves;
• and
• a controller programmed to:
• in response to a temperature of the coolant traversing a threshold resulting in a battery temperature adjustment demand while the position of the first valve is such that the coolant circuit incorporates the radiator and bypasses the chiller, re-positioning the first valve such that the coolant circuit bypasses the radiator and incorporates the chiller, and
• in response to the temperature exceeding another threshold resulting in a battery temperature adjustment demand while the position of the second and third valves is such that the refrigerant circuit incorporates the evaporator and bypasses the chiller, re-positioning the second and third valves such that the refrigerant circuit bypasses the evaporator and incorporates the chiller.