Hyundai Santa Fe (DM): Thermostat. Troubleshooting - Cooling System - Engine Mechanical SystemHyundai Santa Fe (DM): Thermostat. Troubleshooting

Troubleshooting

Symptoms
 Possible Causes
 Remedy
Coolant leakage
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From the thermostat gasket
Check the mounting bolts
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Check the torque of the mounting bolts
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Retighten the bolts and check leakage again.
Check the gasket for damage
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Check gasket or seal for damage
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Replace gaskets and reuse the thermostat.
Cooled excessively
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Low heater performance (cool air blows-out)
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Thermogauge indicates 'LOW'
Visually check after removing the radiator cap.
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Insufficient coolant or leakage.
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After refilling coolant, recheck.
GDS check&Starting engine
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Check DTCs
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Check connection of the fan clutch or the fan motor.
※ If the fan clutch is always connected, there will be a noise at idle.
•
Check the engine coolant sensor, wiring and connectors.
•
Replace the componants.
Remove the thermostat and inspect
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Check if there are dusts or chips in the thermostat valve.
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Check adherence of the thermostat.
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Clean the thermostat valve and reuse the thermostat.
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Replace the thermostat, if it doesn't work properly.
Heated excessively
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Engine overheated
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Thermogauge indicates 'HI'
Visually check after removing the radiator cap.
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Insufficient coolant or leakage.
※ Be careful when removing a radiator cap of the overheated vehicle.
•
Check air in cooling system.
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After refilling coolant, recheck.
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Check the cylinder head gaskets for damage and the tightening torque of the mounting bolts.
GDS check&Starting engine
•
Check DTCs
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Check the fan motor performance as temperature varies.
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Check if the fan clutch slips.
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Check the water pump adherence or impeller damaged.
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Check the engine coolant sensor, wiring and connectors.
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Check the fan motor, the relay and the connector.
•
Replace the fan clutch, if it doesn't work properly.
•
Replace the water pump, if it doesn't work properly.
Immerse the thermostat in boiling water and inspection.
•
After removing the thermostat, check it works properly.
※ Check the thermostat opens at the valve opening temperature.
•
Replace the thermostat, if it doesn't work properly.


Thermostat. Repair procedures
Removal and Installation Removal of the thermostat would have an adverse effect, causing a lowering of cooling efficiency. Do not remove the thermostat, even if the engine tends to overheat. 1. Drain engine ...

Water pump. Components and Components Location
Components 1. Water pump pulley 2. Water pump 3. Water pump gasket 4. Water pump housing 5. Water pump housing gasket 6. O-ring 7. Water inlet pipe ...

See also:

Components and Components Location
Components Location 1. Engine Control Module (ECM) 2. Manifold Absolute Pressure Sensor (MAPS) 3. Intake Air Temperature Sensor (IATS) 4. Engine Coolant Temperature Sensor (ECTS) 5. Throttle Position Sensor ...

Automatic-dimming function
Your mirror will automatically dim upon detecting glare from the vehicles traveling behind you. The autodimming function can be controlled by the Dimming ON/OFF Button: 1. Pressing and hold the button ...

Mirrors
Inside rearview mirror Adjust the rearview mirror so that the center view through the rear window is seen. Make this adjustment before you start driving. WARNING - Rear visibility Do not place objects ...