8AR-FTS COOLING SERVICE DATA

Thermostat
Condition Specified Condition
Standard valve opening temperature 80 to 84°C (176 to 183°F)
Standard valve lift 10 to 12 mm (0.394 to 0.472 in.) at 95°C (203°F)
Thermostat (for Cylinder Block)
Condition Specified Condition
Standard valve opening temperature 76 to 80°C (169 to 176°F)
Standard valve lift 8.0 mm (0.315 in.) or more at 91°C (196°F)
Cooling Fan Motor
Item Condition Specified Condition
Cooling fan motor LH Battery voltage applied at 20°C (68°F) 15.0 to 21.0 A
Cooling fan motor RH Battery voltage applied at 20°C (68°F) 15.0 to 21.0 A
Relay
Item Tester Connection Condition Specified Condition
FAN NO. 1 relay 3 - 5 Battery voltage not applied between terminals 1 and 2 10 kΩ or higher
3 - 5 Battery voltage applied between terminals 1 and 2 Below 1 Ω
FAN NO. 2 relay 3 - 5 Battery voltage not applied between terminals 1 and 2 10 kΩ or higher
3 - 5 Battery voltage applied between terminals 1 and 2 Below 1 Ω
Radiator
Item Condition Specified Condition
Radiator cap sub-assembly Standard value (for brand-new radiator cap sub-assembly)

93 to 123 kPa (0.9 to 1.3 kgf/cm2, 13.5 to 18.0 psi)

Minimum standard value (for used radiator cap sub-assembly)

79 kPa (0.8 kgf/cm2, 11.5 psi)

Coolant
Capacity Classification
8.7 liters (9.2 US qts, 7.7 Imp. qts) LEXUS vehicles are filled with TOYOTA SLLC at the factory. In order to avoid damaging the engine cooling system and other technical problems, only use TOYOTA SLLC or similar high quality ethylene glycol based non-silicate, non-amine, non-nitrite, 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).