Section 719 (Engine Coolant): Replacement

WARNING: This page is about a different car, the 2004 Lexus SC 430. However, it is still accessible from the selected car via links, so may be relevant.

DRAIN ENGINE COOLANT
1. Remove the radiator cap.
  CAUTION: To avoid the danger of being burned, do not remove the water outlet cap while the engine and radiator are still hot. Thermal expansion will cause hot engine coolant and steam to blow out from the radiator.
2. Loosen the radiator drain plug and drain the engine coolant.
  
  Fig 1: Identifying Drain Plug
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
ADD ENGINE COOLANT
1. Slowly fill the cooling system with coolant.
  Capacity: 9.9 liters (10.46 US qts, 8.71 lmp. qts)
  
  HINT:
  - Use of improper coolants may damage the engine cooling system.
  - Use "Toyota Super Long Life Coolant" or similar high quality ethylene glycol based non-silicate, non-amine, non-nitrite, and non-borate coolant with long-life hybrid organic acid technology.
  - New Toyota vehicles are filled with Toyota Super Long Life Coolant (color is pink, premixed ethylene glycol concentration is approximately 50% and freezing temperature is -35°C (-31°F)). When replacing the coolant, Toyota Super Long Life Coolant is recommended.
  - Observe the coolant level inside the radiator by pressing the inlet and outlet radiator hoses several times by hand. If the coolant level goes down, add the coolant.
  NOTE: Do not use plain water alone.
CHECK FOR ENGINE COOLANT LEAKS
1. Fill the radiator with coolant, then attach a radiator cap tester.
2. Pump it to 137 kPa (1.4 kgf/cm² 19.9 psi), then check for leakage.