Hyundai i-30: Cooling System / Coolant

Hyundai i30 (PD) 2018-2024 Service Manual / Engine Mechanical System / Cooling System / Coolant

Repair procedures
Replacement and Air Bleeding
  
Never remove the reservoir tank cap when the engine is hot. Serious scalding could be caused by hot fluid under high pressure escaping from the radiator.
  
When pouring engine coolant, be sure to shut the relay box lid and not to let coolant spill on the electrical parts or the paint. If any coolant spills, rinse it off immediately.
When changing the coolant and draining air, be sure to follow the filling instructions of the Integrated Thermal Management Module (ITM).
If Diagnostic Tool is available, change the coolant and drain air according to the descriptions below.
1.
Make sure the engine and radiator are cool to the touch.
2.
Remove the coolant reservoir tank cap (A).

3.
Remove the engine room under cover.
(Refer to Engine and Transaxle Assembly - "Engine Room Under Cover")
4.
Loosen the drain plug (A), and drain the coolant.

5.
Tighten the radiator drain plug securely after draining the coolant.
6.
Clean the coolant reservoir tank after drain the coolant.
7.
IG Key OFF, Fill with fluid mixture of coolant and water (45 - 60%) slowly through the coolant reservoir tank cap.
  
Fill the coolant as much as possible with the engine OFF.
Press the upper / lower hoses on the radiator so that the air can get out easily.
Use only genuine antifreeze/coolant.
For best corrosion protection, the coolant concentration must be maintained year-round at 45 - 60% minimum.
Coolant concentrations less than 45 - 60% may not provide sufficient protection against corrosion or freezing.
Coolant concentrations greater than 60% will impair cooling efficiency and are not recommended.
Do not mix different brands of antifreeze/coolants.
Do not use additional rust inhibitors or antirust products; they may not be compatible with the coolant.
8.
Connect the diagnostic tool and then Key 'IG ON'.
9.
Use the diagnostic tool to activate the "integrated thermal management module (ITM) coolant refilling mode".

10.
Complete the ITM coolant refilling mode according to the procedure of the diagnostic tool.
11.
Fill with fluid mixture of coolant and water (45 - 60%) slowly through the coolant reservoir tank cap.
Coolant capacity
Approx. 6.1 L (1.61 U.S.gal., 6.44 U.S.qt., 5.36 lmp.qt.)
  
Press the upper / lower hoses on the radiator so that the air can get out easily.
Use only genuine antifreeze/coolant.
For best corrosion protection, the coolant concentration must be maintained year-round at 45 - 60% minimum.
Coolant concentrations less than 45 - 60% may not provide sufficient protection against corrosion or freezing.
Coolant concentrations greater than 60% will impair cooling efficiency and are not recommended.
Do not mix different brands of antifreeze/coolants.
Do not use additional rust inhibitors or antirust products; they may not be compatible with the coolant.
12.
Key-off and then disconnect the diagnostic tool.
  
Key-off :
Turn Key: The start key has been removed from the keybox.
Button key (including SmartKey): Power(ACC, ON) is not activated.
13.
Install the coolant reservoir tank cap (A).

14.
Check the coolant quantity after driving the vehicle.
15.
If the coolant is insufficient, replenish it.
16.
Install the engineroom under cover.
(Refer to Engine and Transaxle Assembly - "Engine Room Under Cover")
If Diagnostic Tool is not available, replace the coolant and drain air according to the descriptions below.
1.
Make sure the engine and radiator are cool to the touch.
2.
Remove the coolant reservoir tank cap (A).

3.
Remove the engine room under cover.
(Refer to Engine and Transaxle Assembly - "Engine Room Under Cover")
4.
Loosen the drain plug (A), and drain the coolant.

5.
Tighten the radiator drain plug securely after draining the coolant.
6.
Clean the coolant reservoir tank after drain the coolant.
7.
Key-off and then disconnect the integrated thermal management module (ITM) connector (A).

  
When disconnecting the integrated thermal management module (ITM) connector, make sure that there is no power to the engine and other components.
Be careful that static electricity and other voltages are not applied to the integrated thermal management module (ITM).
Do not bring anything with magnetism, such as a magnet, close to the integrated thermal management module (ITM).
  
Key-off :
Turn Key: The start key has been removed from the keybox.
Button key (including SmartKey): Power(ACC, ON) is not activated.
8.
Fill with fluid mixture of coolant and water (45 - 60%) slowly through the coolant reservoir tank cap.
Coolant capacity
Approx. 6.1 L (1.61 U.S.gal., 6.44 U.S.qt., 5.36 lmp.qt.)
  
Fill the coolant as much as possible with the engine and all power OFF.
Press the upper / lower hoses on the radiator so that the air can get out easily.
Use only genuine antifreeze/coolant.
For best corrosion protection, the coolant concentration must be maintained year-round at 45 - 60% minimum.
Coolant concentrations less than 45 - 60% may not provide sufficient protection against corrosion or freezing.
Coolant concentrations greater than 60% will impair cooling efficiency and are not recommended.
Do not mix different brands of antifreeze/coolants.
Do not use additional rust inhibitors or antirust products; they may not be compatible with the coolant.
9.
After starting the engine, refill the coolant for 20 minutes used by coolant reservoir tank.
10.
After shut engine off and connect the integrated thermal management module (ITM) connector (A).

  
When connecting the integrated thermal management module (ITM) connector, water or oil must be completely removed from the connector and no foreign matters should be entered.
When replacing the integrated thermal management module (ITM) connector, be sure to use the specified connector.
11.
After starting the engine for 5 seconds, turn off the engine.
  
This procedure is repeated 3 times.
Check if the check engine light is OFF in the 4th after 3 repetitions.
12.
Install the coolant reservoir tank cap (A).

13.
Check the coolant quantity after driving the vehicle.
14.
If the coolant is insufficient, replenish it.
15.
Install the engineroom under cover.
(Refer to Engine and Transaxle Assembly - "Engine Room Under Cover")

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