OUTLINE
The cooling system is a pressurized, forced-circulation type.
A thermostat with a bypass valve is located on the water inlet housing to maintain suitable temperature distribution in the cooling system.
An aluminum radiator core is used for weight reduction.
A water-cooled type engine oil cooler is used.
Toyota Genuine Super Long Life Coolant (SLLC) is used.
On the models compliant with EURO 4 emission regulations, a water-cooled type EGR cooler that is integrated with a bypass is used.
| *A | Models Compliant with EURO 4 Emission Regulations | *B | Cold Area Specification Models |
| *1 | Radiator Assembly | *2 | Reservoir Tank |
| *3 | Thermostat | *4 | EGR Pipe Sub-assembly - EGR Cooler |
| *5 | Ventilation Pipe Sub-assembly | - | - |
SPECIFICATION
Engine Coolant
| Engine Coolant Type | Toyota Genuine Super Long Life Coolant (SLLC) or similar high quality ethylene glycol based non-silicate, non-amine, non-nitrite and non-borate coolant with long-life hybrid organic acid technology (coolant with long-life hybrid organic acid technology is a combination of low phosphates and organic acids.) Do not use plain water alone. | |
| Maintenance Intervals | First Time | 160000 km (100000 miles) |
| Subsequent | Every 80000 km (50000 miles) | |
| Color | Pink | |
Tech Tips
SLLC is pre-mixed (50% coolant and 50% deionized water).
Thermostat
| Thermostat Opening Temperature | 80°C to 84°C (176°F to 183°F) |