Hyundai Santa Fe (TM): Cooling System

Hyundai Santa Fe TM 2019-2023 Service Manual / Engine Mechanical System / Cooling System

Coolant. Repair procedures

Refilling And 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.

•	Be careful not to damage the parts located under the vehicle (floor under cover, fuel filter, fuel tank and canister) when raising the vehicle using the lift. (Refer to General Information - "Lift and Support Points")

•	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.

1.	Make sure the engine and radiator are cool to the touch.

2.	Remove reservoir tank cap (A).

3.	Loosen the drain plug (A), and drain the coolant.

4.	Tighten the radiator drain plug securely.

5.	After draining engine coolant in the reservoir tank, clean the tank.

Fill the radiator with water through the reservoir tank cap and tighten the cap.

•	To most effectively bleed the air, pour the water slowly and press on the upper/lower radiator hoses.

7.	Start the engine and allow to come to normal operating temperature. Wait for the cooling fans to turn on several times. Accelerate the engine to aid in purging trapped air. Shut engine off.

8.	Wait until the engine is cool.

9.	Repeat steps 1 to 8 until the drained water runs clear.

10.

Fill fluid mixture with coolant and water(5:5) (Tropical region – 4:6) slowly through the radiator cap. Push the upper/lower hoses of the radiator so as bleed air easily.

•	Use only genuine antifreeze/coolant.

•	For best corrosion protection, the coolant concentration must be maintained year-round at 35% minimum. Coolant concentrations less than 35% may not provide sufficient protection against corrosion or freezing.

•	Coolant concentrations greater then 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.

11.	Start the engine and run until coolant circulates. When the cooling fan operates and coolant circulates, refill coolant through the radiator cap.

12.	Repeat 11 until the cooling fan 3-5 times and bleed air sufficiently out of the cooling system.

13.	Install the radiator cap and fill the reservoir tank to the "MAX (or F)" line with coolant.

14.	Run the vehicle under idle until the cooling fan operates 2-3 times.

15.	Stop the engine and wait coolant gets cool.

16.

Repeat 10 to 15 until the coolant level doesn't fall any more, bleed air out of the cooling system.

•	It takes time to bleed out all the air in the cooling system. Refill coolant when coolant gets cool completely, when recheck the coolant level in the reservoir tank for 2-3 days after replacing coolant.

Coolant capacity

AT : 7.7 L (2.0 U.S.gal., 8.14 U.S.qt., 6.8 lmp.qt.)

Radiator. Repair procedures

Removal and Installation

•	Be careful not to damage the parts located under the vehicle (floor under cover, fuel filter, fuel tank and canister) when raising the vehicle using the lift. (Refer to General Information - "Lift and Support Points")

1.	Remove the cooling fan. (Refer to Cooling System - "Cooling Fan")

2.	Disconnect the radiator lower hose (A) from inlet fitting.

3.	Disconnect the ATF cooler hoses (A).

4.	Pull the raditor upward and remove it from engine room.

5.	Install in the reverse order of removal.

6.	Fill the radiator with coolant and check for leaks.

Cooling Fan. Repair procedures

Removal and Installation

•	Be careful not to damage the parts located under the vehicle (floor under cover, fuel filter, fuel tank and canister) when raising the vehicle using the lift. (Refer to General Information - "Lift and Support Points")

1.	Disconnect the battery negative terminal.

2.	Remove the air cleaner assembly. (Refer to Intake and Exhasut System - "Air Cleaner")

3.	Remove the front bumper cover. (Refer to Body (Interior and Exterior) - "Front Bumper Cover")

Remove the air intake shield (A).

Tightening torque :

7.8 - 11.8 N.m (0.8 - 1.2 kgf.m, 5.8 - 8.7 lb-ft)

Remove the radiator upper air guard (A).

Tightening torque :

7.8 - 11.8 N.m (0.8 - 1.2 kgf.m, 5.8 - 8.7 lb-ft)

Remove the radiator mounting bracket (A).

Tightening torque :

7.8 - 11.8 N.m (0.8 - 1.2 kgf.m, 5.8 - 8.7 lb-ft)

[LH]

[RH]

7.	Remove the front bumper beam assembly. (Refer to Body (Interior and Exterior) - "Front Bumper Beam Assembly")

Remove the air dam (A).

Tightening torque :

7.8 - 11.8 N.m (0.8 - 1.2 kgf.m, 5.8 - 8.7 lb-ft)

Remove the radiator side air guard (A).

Tightening torque :

7.8 - 11.8 N.m (0.8 - 1.2 kgf.m, 5.8 - 8.7 lb-ft)

[LH]

[RH]

10.	Loosen the A/C pipe bracket mounting bolt (A).

11.	Disconnect the radiator upper hose (A) and degassing hose (B) from radiator.

12.	Separate the condenser from the radiator.

13.	Disconnect the cooling fan from radiator.

14.	Install in the reverse order of removal.

Disassembly

Remove the cooling fan (A) and then remove the cooling fan motor (B) from the cooling fan assembly.

Tightening torque:

3.9 - 5.9 N.m (0.4 - 0.6 kgf.m, 2.9 - 4.3 lb-ft)

2.	Install in the reverse order of removal.

Inspection

1.	Turn ignition switch "OFF" and connect the diagnostic tool to the Data Link Connector.

2.	With the gear shift in P (Park) position and ignistion switch "ON" (LED of the Power button illuminates in Red), select the "force drive" function.

Force drive the cooling fan motor.

•	There are two functions for the fan motor force drive: Low speed and high speed.

[Fan motor low speed]

1)	Start the "Fan motor low speed" of the force drive function.

2)	Force drive by pressing the start button.

3)	Visually check the operation of the cooling fan.

4)	Stop the force drive by pressing the stop button.

[Fan motor high speed]

1)	Start the "Fan motor high speed" of the force drive function.

2)	Force drive by pressing the start button.

3)	Visually check the operation of the cooling fan.

4)	Stop the force drive by pressing the stop button.

Reservoir Tank. Repair procedures

Removal and Installation

Remove the reservoir tank.

(1)	Disconnect the water hose (A).

(2)	Disconnect the degassing hose (B).

(3)

Remove the reservoir tank (C).

Tightening torque :

7.8 - 11.7 N.m (0.8 - 1.2 kgf.m, 5.7 - 8.6 Ib-ft)

2.	Install in the reverse order of removal.

Water Temperature Control Assembly. Repair procedures

Removal and Installation

•	Be careful not to damage the parts located under the vehicle (floor under cover, fuel filter, fuel tank and canister) when raising the vehicle using the lift. (Refer to General Information - "Lift and Support Points")

1.	Disconnect the battery negative terminal.

2.	Remove the engine room under cover. (Refer to Engine and Transaxle Assembly - "Engine Room Under Cover")

3.	Drain the coolant. (Refer to Cooling System - "Coolant")

4.	Remove the air duct and air cleaner assembly. (Refer to Intake and Exhaust System - "Air Cleaner")

5.	Remove the battery. (Refer to Engine Electrical System - "Battery")

6.	Remove the battery tray. (Refer to Engine Electrical System - "Battery")

7.	Disconnect the radiator upper hose (A).

8.	Disconnect the radiator lower hose (A).

9.	Disconnect the heater hoses (A).

10.	Disconnect the oil cooler hoses (A).

11.	Disconnect the engine coolant temperature sensor connector (ECTS) (A) and electric thermostat connector (B).

12.

Remove the water pipe mounting bolt (A).

Tightening torque :

9.8 - 11.8 N.m (1.0 - 1.2 kgf.m, 7.2 - 8.7 lb-ft)

13.

Remove the water temperature control assembly (A).

Tightening torque :

9.8 - 11.8 N.m (1.0 - 1.2 kgf.m, 7.2 - 8.7 lb-ft)

14.	Install in the reverse order of removal.

15.	Fill with engine coolant. (Refer to Cooling System - "Coolant")

16.	Start engine and check for leaks.

Water pump. Repair procedures

Removal and Installation

•	Be careful not to damage the parts located under the vehicle (floor under cover, fuel filter, fuel tank and canister) when raising the vehicle using the lift. (Refer to General Information - "Lift and Support Points")

1.	Disconnect the battery negative terminal.

2.	Drain the coolant. (Refer to Cooling System - "Coolant")

3.	Remove the water pump belt. (Refer to Timing System - "Drive Belt")

4.	Disconnect the water hose (A).

5.	Remove the exhaust manifold. (Refer to Intake And Exhaust System - "Exhaust Manifold")

Remove the water pump pulley (A).

Tightening torque :

9.8 - 11.8 N.m (1.0 - 1.2 kgf.m, 7.2 - 8.7 lb-ft)

7.	Remove the water temperature control assembly. (Refer to Cooling System - "Water Temperature Control Assembly")

Remove the water pipe.

(1)	Disconnect the crankshaft position sensor connector wiring fastener (A).

(2)

Remove the water pipe (B).

Tightening torque :

9.8 - 11.8 N.m (1.0 - 1.2 kgf.m, 7.2 - 8.7 lb-ft)

Remove the water pump (A) with gasket.

Tightening torque :

18.6 - 23.5 N.m (1.9 - 2.4 kgf.m, 13.7 - 17.4 lb-ft)

10.

Install in the reverse order of removal.

•	When installing, replace with new gasket.

11.	Fill with engine coolant. (Refer to Cooling System - "Coolant")

12.	Start the engine and check for leaks.

13.	Recheck the engine coolant level.

Inspection

1.	Check each part for cracks, damage or wear, and replace the coolant pump assembly if necessary.

2.	Check the bearing for damage, abnormal noise and sluggish rotation, and replace the coolant pump assembly if necessary.

Check for coolant leakage. If coolant leaks from hole, the seal is defective.

Replace the coolant pump assembly.

A small amount of "weeping" from the bleed hole is normal.

Water pump. Troubleshooting

Troubleshooting

Symptoms

Possible Causes

Remedy

Coolant leakage

•	From the bleed hole of the water pump

Visually check

•	Check leaks after about ten-minute warming up.

•	If coolant still leaks, replace a water pump.

•	If leakage stops, reuse the water pump (Do not replace the pump with a new one).

•	From gaskets or bolts

•	Check the tightening of the water pump mounting bolts.

•	Retighten the mounting bolts.

•	Check damage of gaskets or inflow of dust.

•	Replace the gasket and clean dust off.

•	From outer surface of water pump

•	Check the material or any cracks of the water pump.

•	Poor material. If any crack found, replace the water pump.

Noise

•	From bearings

•	From mechanical seals

•	Impeller interference

Inspection with a stethoscope

•	After starting the engine, check noise with a stethoscope.

•	If there is no noise, reuse the water pump(do not replace it).

•	If there is any noise from the water pump, remove the drive belt and recheck.

Inspection after removing a drive belt

•	After removing a water pump and a drive belt, check noise again.

•	If there is noise, reuse the water pump. Check other drive line parts.

•	If there is no noise, replace the water pump with a new one.

Inspection after removing a water pump

•	After removing a water pump and a drive belt, check noise again.

•	If there is any interference between them, replace the water pump with a new one.

Overheating

•	Damaged impeller

•	Loosened impeller

Loosened impeller

•	Corrosion of the impeller wing

•	Check engine coolant.

•	Poor coolant quality / Maintenance check

•	Impeller seperation from the shaft

•	Replace the water pump.

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