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RAV4
2 generation [2000 - 2003]
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2 generation [2000 - 2003]
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Replacing the coolant and flushing the Toyota RAV4 cooling system

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Tool
5 - 30 minutes
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Tool:

  • ​Spanner wrench curved
  • Phillips screwdriver small

Parts and consumables:

  • Hose
  • Liquid collection container
  • Coolant 
  • Watering can

Notes:

Do not allow coolant to come into contact with clothing or body paintwork. Otherwise, rinse the surface with plenty of water. Collect and dispose of the drained coolant.

Change the coolant at the recommended intervals (every 50,000 km or 24 months), and after any work on the elements of the cooling system, draining the coolant. If the cylinder head, head gasket, radiator or oil heat exchanger was replaced during the repair, fill the cooling system with fresh coolant. This is due to the fact that the anti-corrosion additive in the coolant is deposited during engine operation and creates anti-corrosion protection. In used coolant, anti-corrosion additives are not active enough to form a protective layer on newly installed parts.

Drain the coolant on a cold engine.​

1.  Remove the cap from the radiator.

Radiator cap Toyota RAV4

2. Install a container to collect the coolant under the radiator drain pipe. Attach a 9.5 mm ID hose to the drain port to direct the coolant into a container.

Note:

On some models, the hose is installed at the time of manufacture of the vehicle.

3. Open the drain plug and drain the coolant from the radiator.

Toyota RAV4 Radiator Drain Plug

4. Move the container under the coolant drain pipe from the cylinder block. Attach a 9.5 mm ID hose to the drain port to direct the coolant into a container. Use a wrench to open the tap and drain the coolant from the cylinder block.

Coolant drain plug from Toyota RAV4 cylinder block

5. Check up a condition of hoses of a radiator and a heater, and also reliability of their fastening by collars. Replace damaged hoses and clamps.

Leaking coolant Toyota RAV4

6.  After draining the coolant, remove the thermostat and reinstall the thermostat housing.

Thermostat shroud Toyota RAV4

Note:

Such actions will allow you to quickly flush the cooling system.

7.  Close the radiator drain plug. Set the heater control knob to the maximum heat position so that the radiator and heater hoses are also flushed.

Heater control panel

8.  Disconnect the upper radiator hose from it using a Phillips screwdriver, then insert a garden hose into the radiator inlet and flush the system with clean water until clean water comes out of the upper radiator hose.

Upper Radiator Hose Toyota RAV4

Note:

In case of serious contamination of the radiator, remove the radiator and wash it with a special agent, following the instructions for use.

9.  Move the garden hose to the expansion tank and flush the system with clean water until clean water comes out of the upper radiator hose.

Expansion tank of Toyota RAV4 cooling system

10.  Connect the upper radiator hose to the radiator.

11.  Close the coolant drain plug from the radiator and the drain cock from the cylinder block. Reinstall the thermostat.

Toyota RAV4 thermostat installation rule

12.  Set the heater control knob to the maximum heating position.

13.  Slowly pour fresh coolant into the radiator with a funnel until it emerges from the radiator filler neck.

Full fluid radiator Toyota RAV4

14. Add coolant to the expansion tank to the minimum mark.

Adding coolant to the expansion tank Toyota RAV4

15.  Close the radiator cap. Start the engine and warm it up to the thermostat opening temperature, while the coolant will begin to flow through the radiator. The radiator and upper radiator hose will start to heat up.

16.  Turn off the engine and wait until it cools down. Add coolant until it comes out of the radiator filler neck.

17.  Squeeze the upper radiator hose several times to remove air from the cooling system and add coolant if necessary. Install the radiator cap.

18.  Start the engine, warm it up to operating temperature and check the cooling system for leaks.

The article is missing:

  • Tool photo
  • Photo of parts and consumables

Source:  http://www.navigator.mn/toyota-rav4/tehnicheskoe-obsluzhivanie/amena-ohlazhdayushchey-zhidkosti-i-promivka-sistemi-ohlazhdeniya.html

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