Genuine Toyota Prius Radiator

Toyota Prius Radiator Parts Questions & Answers

• Radiator Assembly
  16400-21250
  Q: How do you remove and replace the radiator in a Toyota Prius?

  A: To replace the radiator in your vehicle, follow these steps. First, have the refrigerant evacuated from the air conditioning system. Then, disconnect the cable from the negative terminal of the auxiliary 12-volt battery and remove the engine Cooling Fan Assembly. Remove the front bumper and the radiator reservoir hose. Disconnect the air conditioning refrigerant lines from the A/C Condenser. Remove the upper radiator support bar and raise the vehicle securely on jack stands. Pull the radiator/condenser assembly rearward and lower it out of the engine compartment. On 2004 through 2009 models, repeat the step of disconnecting the cable from the negative terminal of the auxiliary 12-volt battery and remove the engine cooling fan assembly. Remove the four radiator corner support brackets and disconnect the wiring from the temperature sensor before removing the radiator. On 2010 and later models, disconnect the cable from the negative terminal of the auxiliary battery and remove the radiator upper cover by removing the plastic retainers. Drain the engine coolant and disconnect both radiator hoses. Remove the front bumper cover, and if applicable, the sensor assembly and bracket for Dynamic Radar Cruise Control. Remove the interfering inverter support bracket and detach the coolant hose from the radiator frame. Disconnect the hood latch connector, cables, and wiring from the horns and fan motor. Remove the upper radiator brackets and the air filter housing assembly. Disconnect the remaining hoses from the radiator and upper fan shroud, and remove the upper fan shroud. Carefully lift out the radiator along with the main fan shroud, remove the two lower bolts, and separate the lower fan shroud from the radiator. For all models, once the radiator is removed, it should be inspected for leaks, damage, and internal blockage. Professional radiator shops or dealer service departments should handle any necessary repairs due to special techniques required. Clean the radiator from bugs and dirt using compressed air and a soft brush, being careful not to bend the cooling fins. Wear eye protection when using compressed air. Installation is the reverse of the removal procedure, ensuring that the rubber mounts are in place on the bottom of the radiator. After installation, fill the cooling system with the appropriate mixture of antifreeze and water. Start the engine, check for leaks, and allow the engine to reach normal operating temperature, indicated by both radiator hoses becoming hot. Recheck the coolant level and add more if necessary.