Coolant - On-Vehicle Inspection

Lexus IS250 IS220d GSE20 ALE20 4GR-FSE COOLING

COOLANT - ON-VEHICLE INSPECTION

1. REMOVE COOL AIR INTAKE DUCT SEAL
Coolant - On-Vehicle Inspection. 4GR-FSE COOLING. Lexus IS250 IS220d GSE20 ALE20

Remove the 11 clips and intake duct seal.

2. REMOVE V-BANK COVER SUB-ASSEMBLY
Coolant - On-Vehicle Inspection. 4GR-FSE COOLING. Lexus IS250 IS220d GSE20 ALE20

Raise the V-bank cover to disengage the clip on the rear of the cover. Raise the cover again to disengage the 2 clips on the front of the cover and remove the cover.

  • NOTICE:
  • Attempting to disengage both front and rear clips at the same time may cause the cover to break.
3. REMOVE NO. 1 INLET AIR CLEANER
Coolant - On-Vehicle Inspection. 4GR-FSE COOLING. Lexus IS250 IS220d GSE20 ALE20

Remove the bolt, clip and inlet air cleaner.

4. DRAIN ENGINE COOLANT
  • NOTICE:
  • 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.

Remove the radiator cap and reservoir tank cap.

Loosen the radiator drain cock plug and 2 cylinder block drain cock plugs. Then drain the coolant.

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

Coolant - On-Vehicle Inspection. 4GR-FSE COOLING. Lexus IS250 IS220d GSE20 ALE20

5. ADD ENGINE COOLANT

Tighten all the plugs and fill the radiator with TOYOTA Super Long Life Coolant (SLLC).

  • Torque:
  • 13 N*m{ 130 kgf*cm, 9 ft.*lbf}for cylinder block drain cock plug

Add engine coolant.

  • Specified capacity:
  • 9.1 liters (9.6 US qts, 8.0 lmp. qts)
  • HINT:
TOYOTA vehicles are filled with TOYOTA SLLC at the factory. In order to avoid damage to 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 consists of a combination of low phosphates and organic acids).
Contact your TOYOTA dealer for further details.

Slowly pour coolant into the radiator reservoir until it reaches the FULL line.

Press the inlet and outlet radiator hoses several times by hand, and then check the level of the coolant.


If the coolant level is low, add coolant.

Install the radiator cap and reservoir cap.

Bleed air from the cooling system.

  • NOTICE:
  • Before starting the engine to warm up the engine, turn the A/C switch OFF.

Warm up the engine until the thermostat opens. While the thermostat is open, circulate the coolant for several minutes.

  • HINT:
  • The thermostat open timing can be confirmed by pressing the inlet radiator hose by hand, and checking when the engine coolant starts to flow inside the hose.
  • NOTICE:
  • When pressing the radiator hoses:
Wear protective gloves.
Be careful as the radiator hoses are hot.
Keep your hands away from the radiator fans.

Maintain the engine speed at 2,000 to 2,500 rpm.

Press the inlet and outlet radiator hoses several times by hand to bleed air.

  • NOTICE:
  • When pressing the radiator hoses:
Wear protective gloves.
Be careful as the radiator hoses are hot.
Keep your hands away from the radiator fans.

Stop the engine, and wait until the engine coolant cools down to ambient temperature.

  • NOTICE:
  • 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.

Check the coolant level in the radiator reservoir.


If the coolant level is low, add SLLC to the radiator reservoir FULL line.

6. CHECK FOR ENGINE COOLANT LEAKS
Coolant - On-Vehicle Inspection. 4GR-FSE COOLING. Lexus IS250 IS220d GSE20 ALE20
  • NOTICE:
  • Before performing each inspection, turn the A/C switch OFF.
  • 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.

Fill the radiator with coolant and attach a radiator cap tester.

Warm up the engine.

Using a 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 cylinder head.

7. INSTALL NO. 1 INLET AIR CLEANER
Coolant - On-Vehicle Inspection. 4GR-FSE COOLING. Lexus IS250 IS220d GSE20 ALE20

Install the inlet air cleaner with the bolt.

  • Torque:
  • 5.0 N*m{ 51 kgf*cm, 44 in.*lbf}
8. INSTALL V-BANK COVER SUB-ASSEMBLY
Coolant - On-Vehicle Inspection. 4GR-FSE COOLING. Lexus IS250 IS220d GSE20 ALE20

Engage the 2 clips on the front of the cover, and then engage the clip on the rear to install the V-bank cover.

  • NOTICE:
Be sure to engage the clips securely.
Do not apply excessive force or do not hit the cover to engage the clips. This may cause the cover to break.
9. INSTALL COOL AIR INTAKE DUCT SEAL
Coolant - On-Vehicle Inspection. 4GR-FSE COOLING. Lexus IS250 IS220d GSE20 ALE20

Install the intake duct seal with the 11 clips.

LEXUS IS250, IS220d / GSE20 ALE20