Replacement [02/2024 - ]: Procedure

Refer to PROCEDURE - Step 5

Refer to PROCEDURE - Step 6

1. Connect a hose with an inside diameter of 9.0 mm (0.354 in.) to the radiator drain cock as shown in the illustration.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a

   Hose

2. Loosen the radiator drain cock plug.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *1

   Reserve Tank Cap

   *2

   Radiator Drain Cock Plug

3. Remove the reserve tank cap. Then drain the engine coolant.

   HINT: 

   Collect the engine coolant in a container and dispose of it according to the regulations in your area.

4. Tighten the radiator drain cock plug by hand.
5. Disconnect the hose from the radiator drain cock.
6. Install the reserve tank cap.

HINT: 

After parts are removed and installed, the thermostat may not open by only performing the coolant replacement procedure even if the engine is warmed up without removing air. In this case, perform the procedure again after draining the coolant.

1. Remove the reserve tank cap.
2. Pour coolant of the specified concentration into the radiator reserve tank assembly until it reaches the position shown in the illustration.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Specified Capacity

   Item	Specified Condition
   w/o Rear Air Conditioning system	11.5 liters (12.2 US qts, 10.1 Imp. qts)
   w/ Rear Air Conditioning system	13.5 liters (14.3 US qts, 11.9 Imp. qts)

   NOTE:

   Do not substitute plain water for coolant.

3. Install the reserve tank cap.
4. Put the vehicle in inspection mode(2WD MAINTENANCE MODE or 4WD/AWD MAINTENANCE MODE)[*1]

   Refer to INSPECTION MODE PROCEDURE [02/2024 - ]

5. Warm up the engine until the thermostat opens. When the thermostat opens, run the engine for several minutes to circulate the coolant.[*2]
   WARNING:

   • Wear protective gloves while working.
   • Pay attention to fan operation.
   • The engine, radiator assembly and radiator hose become hot after the engine is warmed up, which may lead to burns if touched.
   NOTE:

   • If the radiator reserve tank assembly runs out of coolant, perform the following immediately stop the engine wait until the coolant has cooled down and pour in coolant.
   • Do not start the engine when there is no coolant in the radiator reserve tank assembly.
   • Make sure that the coolant temperature gauge of the meter does not display a high temperature.
   • If there is not enough coolant, the engine may overheat.

   HINT: 

   When the thermostat is open, continuously pour coolant into the radiator reserve tank assembly.

6. Stop the engine and wait until the coolant cools down.[*3]
7. Check that the coolant level of the radiator reserve tank assembly is up to the F line.[*4]

   HINT: 

   • If the coolant level is lower than the F line, pour coolant of the specified concentration into the radiator reserve tank assembly until it reaches the F line, install the reserve tank cap, and repeat the procedure from step [*1] to [*4].
   • If the coolant level is higher than the F line, drain coolant until it falls to the F line.

Refer to PROCEDURE - Step 1

Refer to PROCEDURE - Step 48

Refer to PROCEDURE - Step 49