2009 ENGINE
Cooling (1GR-FE) - Tundra
COOLING SYSTEM
ON-VEHICLE INSPECTION
1. INSPECT FOR COOLANT LEAK
a. Fill the radiator with coolant and attach a radiator cap tester.
b. Warm up the engine.
c. Using the radiator cap tester, increase the pressure inside the radiator to 118 kPa (1.2 kgf/cm2 , 17
psi), and check that the pressure does not drop. If the pressure drops, check the hoses, radiator and
water pump for leaks. If no external leaks are found, check the heater core, cylinder block and head.
Fig. 1: Checking Pressure Does Not Drop
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
2. CHECK ENGINE COOLANT LEVEL IN RESERVOIR
a. Check that the engine coolant level is between the LOW and FULL lines when the engine is cold.
If the engine coolant is low, check for leaks and add "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 to the FULL line.
CAUTION: Do not remove the radiator cap while the engine and radiator are still
hot. Pressurized, hot engine coolant and steam may be released and
cause serious burns.
NOTE:
Do not substitute plain water for engine coolant.
2009 Toyota Tundra
2009 ENGINE Cooling (1GR-FE) - Tundra
Fig. 2: Identifying Engine Coolant Level FULL Lines
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
3. CHECK ENGINE COOLANT QUALITY
a. Remove the radiator cap.
b. Check if there are any excessive deposits of rust or scales around the radiator cap and radiator filler
hole. Also, the coolant should be free of oil.
If excessively dirty, clean the coolant passage and replace the coolant.
c.
Install the radiator cap.
COOLANT
REPLACEMENT
1. REMOVE NO. 1 ENGINE UNDER COVER (See REMOVAL )
2. DRAIN ENGINE COOLANT
a. Loosen the radiator drain cock plug and 2 cylinder block drain cock plugs.
CAUTION: Do not remove the radiator cap while the engine and radiator
are still hot. Pressurized, hot engine coolant and steam