Symptoms
|
Possible Causes
|
Remedy
|
Coolant leakage
|
• |
From the thermostat gasket
|
|
Check the mounting bolts
|
• |
Check the torque of the mounting bolts
|
|
• |
Retighten the bolts and check leakage again.
|
|
Check the gasket for damage
|
• |
Check gasket or seal for damage
|
|
• |
Replace gaskets and reuse the thermostat.
|
|
Cooled excessively
|
• |
Low heater performance (cool air blows-out)
|
• |
Thermogauge indicates 'LOW'
|
|
Visually check after removing the radiator cap.
|
• |
Insufficient coolant or leakage.
|
|
• |
After refilling coolant, recheck.
|
|
Check KDS/GDS and start engine
|
• |
Check the fan motor performance as temperature varies.
|
• |
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.
|
• |
Check the fan motor, the relay and the connector.
|
• |
Replace the components.
|
|
Remove the thermostat and inspect
|
• |
Check for dust or chips in the thermostat valve.
|
• |
Check adherence of the thermostat.
|
|
• |
Clean the thermostat valve and reuse the thermostat.
|
• |
Replace the thermostat, if it doesn't work properly.
|
|
Heated excessively
|
• |
Thermogauge indicates 'HI'
|
|
Visually check after removing the radiator cap.
|
• |
Insufficient coolant or leakage.
※ Be careful when removing the radiator cap of the overheated
vehicle.
|
• |
Check air in cooling system.
|
|
• |
After refilling coolant, recheck.
|
• |
Check the cylinder head gaskets for damage and the tightening
torque of the mounting bolts.
|
|
Check KDS/GDS and start engine
|
• |
Check the fan motor performance as temperature varies.
|
• |
Check if the fan clutch slips.
|
• |
Check the water pump adherence or impeller damaged.
|
|
• |
Check the engine coolant sensor, wiring and connectors.
|
• |
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 inspect.
|
• |
After removing the thermostat, check it works properly.
|
※ Check that the thermostat opens at the valve opening temperature.
|
• |
Replace the thermostat, if it doesn't work properly.
|
|
Other information:
Kia Niro (DE HEV) Owners Manual: Operating conditions
The indicator on the switch will illuminate when the Blind spot detection system
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off.
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Kia Niro (DE HEV) Owners Manual: Sunvisor
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