СИСТЕМА ОХЛАЖДЕНИЯ ОБЩИЕ СВЕДЕНИЯ

OUTLINE

The cooling system is a pressurized, forced-circulation type.
A thermostat with a bypass valve is located in the water inlet housing to maintain a suitable temperature in the cooling system.
A downflow radiator is used.
A cooling fan control system in which the cooling fan ECU optimally controls cooling fan speed is used. For details, see 2AR-FSE Engine Control.

TOYOTA genuine Super Long Life Coolant (SLLC) is used.

Text in Illustration
*A	Models with EGR System	*B	Models without EGR System
*1	Engine Water Pump Assembly	*2	Water Inlet with Thermostat Sub-assembly
*3	Throttle Body with Motor Assembly	*4	EGR Valve Assembly
*5	EGR Cooler Assembly	*6	Water By-pass Pipe
*7	Oil Cooler Assembly	-	-
*a	from Radiator Assembly	*b	to Heater Radiator Unit Sub-assembly
*c	from Heater Radiator Unit Sub-assembly	*d	to Radiator Assembly
	Engine Coolant Flow	-	-

SPECIFICATION

Engine Coolant

Toyota Genuine SLLC is used. The maintenance intervals are as shown in the table below:

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). Therefore, no dilution is needed when SLLC in the vehicle is added or replaced.