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HOMESERVICE MANUALSTOYOTA20064RUNNER SR5, 4.7 T, AWDREPAIR AND DIAGNOSISENGINE MECHANICALCOOLING SYSTEM (MECHANICAL)ENGINE COOLING SYSTEMCOOLANT (2UZ-FE)REPLACEMENT
2006 Toyota 4Runner SR5, 4.7 T, AWD

Coolant (2UZ-FE): Replacement

2006 Toyota 4Runner SR5, 4.7 T, AWDSECTION Replacement
  1. DRAIN ENGINE COOLANT 
    CAUTION: To avoid the risk of burn injury, do not remove the radiator cap while the engine and radiator are still hot. Heated fluid and steam can be blown out under pressure inside the radiator.
    1. Remove the radiator cap.
    2. Remove the service hole cover from the engine under cover No. 1.
      Fig 1: Installing Vinyl Hose To Drain On Radiator Side
      G04333661Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Install a vinyl hose to the drain on the radiator side.
    4. Loosen the radiator drain plug and engine drain plug, then drain the coolant from the radiator.
    5. Drain the coolant from the reserve tank.
      6. Fig 2: Identifying Radiator Drain Plug & Engine Drain Plug
      G04333662Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    6. Put in the drain plugs.

      Torque: 13 N.m (130 kgf.cm, 9 ft.lbf) for the engine 

    7. Remove the vinyl hose from the radiator.
  2. ADD ENGINE COOLANT 
    1. Slowly fill the system with engine coolant.

      Capacity: 12.3 liters (13.0 US qts, 10.8 lmp.qts) 

      HINT:

      • Use of improper coolants may damage the engine cooling system.
      • Use "Toyota Super Long Life Coolant" or similar high quality ethlene glycol based non-silicate, non-amine, non-nitrite, and non-borate coolant with long-life hybrid organic acid technology.
      • New Toyota vehicles are filled with Toyota Super Long Life Coolant (color is pink, premixed ethylene-glycol concentration is approximately 50% and freezing temperature is -35°C (-31°F)). When replacing the coolant, Toyota Super Long Life Coolant is recommended.
      • Observe the coolant level inside the radiator by pressing the inlet and outlet radiator hoses several times by hand. If the coolant level goes down, add the coolant.
        NOTE: Do not use plain water alone.
    2. Install the radiator cap.
    3. Bleed the cooling system.
      1. Start the engine, and open the heater water valve.
      2. Maintain the engine speed at 2,000 to 2,500 RPM to warm up the engine.
    4. Stop the engine, then wait until the engine coolant cools down.
    5. Add coolant into the reservoir until the coolant level is "FULL".
  3. CHECK FOR ENGINE COOLANT LEAKS 
    1. Fill the radiator with coolant, then attach a radiator cap taster.
    2. Pump it to 118 kPa (1.2 kgf/cm2 17.1 psi), then check for leakage.
RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.