Annual 7-Point Cooling System CheckupThe seven-point program is designed to identify any areas that need attention. It consists of: 1. a radiator pressure cap test to check for the recommended system pressure level; 2. a thermostat check for proper opening and closing; 3. a pressure test to identify any external leaks to the cooling system parts including the radiator, water pump, engine coolant passages, radiator and heater hoses and heater core; 4. an internal leak test to check for combustion gas leakage into the cooling system; 5. a visual inspection of all cooling system components, including belts and hoses; 6. a system power flush and refill with Toyota recommended concentration of coolant; 7. and an engine fan test for proper operation. |
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