KIA Niro: Cooling System
Components
- Reservoir tank
- Reservoir hose & pipe
- Radiator
- Radiator upper hose
- Radiator lower hose
- Radiator upper mounting bracket (RH)
- Radiator upper mounting bracket (LH)
- Radiator lower mounting insulator (RH)
- Radiator lower mounting insulator (LH)
- Cooling fan assembly 11. Air dam
Engine Overheat Troubleshooting
Inspection : → Remedy
Visual inspection
Inspect for shortage of coolant in reservoir tank . → Reinspect after replenishing coolant.
Inspect for coolant pollution after removing radiator cap. → Reinspect after replacing coolant.
Warning
Be careful when removing radiator cap from overheated vehicle.
Inspect for leakage and loose
coolant hoses (radiator hose,
heater hose, oil cooler hose,
etc.). → Reinspect for leakage after
reinstalling
hoses and clamps.
Inspect for leakage on water inlet fitting mounting part. →
-
Reinspect for leakage after replacing Oring.
-
Reinspect for leakage after tightening to the specified torque.
Inspect drive belt (for normal operation of water pump). → Adjust drive belt tension or replace.
Inspect for leakage on water pump gasket mounting part. →
-
Reinspect for leakage after replacing gasket.
-
Reinspect for leakage after tightening to the specified torque.
Inspect for loose coolant temperature sensor, cooling fan connector and pin. →
-
Reinstall loose connector.
-
Replace relevant part if connector pin is damaged.
Inspect operation status of cooling fan.
-
Check operation status by switching ON/OFF the heater control A/C. → Check mounting status of ground cable.
Warning
Will not operate in cold ambient temperature.
Inspection : → Remedy
Diagnostic device
Inspect self-diagnostic code using KDS. → Check coolant temperature sensor, wiring, connector, etc.
Inspection : → Remedy
Unit inspection
Inspect water pump impeller. →Replace water pump.
Inspect for foreign materials and status of thermostat valve. → Inspect unit after removing foreign materials.
Inspect for stuck thermostat valve.
-
Immerse thermostat in water heated to over 95°C (203°F), then heat for at least 3 minutes to check valve lift. →
Check valve lift.
-
Replace thermostat if valve lift is below
specification or valve is stuck.
Warning
-
Do not use water below 95°
C (203°F). -
Do not directly heat unit as
this will damage thermostat.
- Coolant Repair procedures
- Cooling Fan Repair procedures | Cooling Fan Assembly
- Cooling Fan Control Module (PWM) | Radiator
- Water pump Repair procedures
- Thermostat Repair procedures
- Water Temperature Control Assembly
- Heater Pipe | Active Air Flap (AAF) Repair procedure
READ NEXT:
Coolant Repair procedures
Warning
Never remove the radiator cap when the engine is hot. Serious
scalding could be caused by hot fluid under
high pressure escaping from the radiator.
Warning
When pouring engine coolant, shut the relay box lid and be careful
not to spil
Cooling Fan Repair procedures | Cooling Fan Assembly
Cooling Fan Components and components location
Components
Cooling fan
Cooling fan motor
Cooling fan shroud
Air dam
Cooling fan controller (PWM)
Description
Controls the cooling fan motor voltage depending on the duty
SEE MORE:
Battery Pack Assembly Repair procedures
Warning
Be sure to read and follow the "General Safety Information and
Caution" before doing any work related with the high
voltage system. Failure to follow the safety instructions may result in
serious electrical injuries.
Be sure to
Exterior features
Roof rack
You can load cargo on top of your vehicle.
WARNING
The following specification is the maximum
weight that can be loaded onto
the roof rack. Distribute the load as
evenly as possible across the crossbars
(if equipped) and roof rack
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