RX 400h AWD V6-3.3L (3MZ-FE) Hybrid (2007)
Coolant: Testing and Inspection
COOLANT (For Engine)
1. DRAIN ENGINE COOLANT
a. Remove the radiator cap.
CAUTION: To avoid the danger of being burned, do not remove the radiator cap while the engine and radiator are still hot. Thermal
expansion will cause hot engine coolant and steam to blow out from the radiator.
b. Drain the engine coolant by loosening the lower drain plug of the radiator and the cylinder block drain cock plugs.
HINT: Engine coolant inside the radiator is drained from the drain hole located on the bottom of the engine undercover.
c. Tighten the cylinder block drain cock plugs.
Torque: 13 Nm (133 kgf-cm, 9 inch lbs.)
2. ADD ENGINE COOLANT
a. Tighten the lower drain plug of the radiator.
b. Loosen the upper drain plug of the radiator.
c. Install a vinyl tube to the vent plug located on the upper drain plug.
d. Fill the radiator with engine coolant until the vinyl tube is filled with the coolant.
e. Tighten the upper drain plug.