Hyundai Palisade (LX2): Cooling System / Troubleshooting

Hyundai Palisade (LX2) 2020-2025 Service Manual / Engine Mechanical System / Cooling System / Troubleshooting

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.
Hyundai Palisade. Troubleshooting   
•
Be careful when removing radiator cap from overheated vehicle.
Reinspect after replacing coolant.
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 O-ring.
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.
Hyundai Palisade. Troubleshooting   
•
Will not operate in cold ambient temperature.
Check mounting status of ground cable.
Diagnostic device
 Inspect self-diagnostic code using GDS.
Check coolant temperature sensor, wiring, connector, etc.
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.
Hyundai Palisade. Troubleshooting   
•
Do not use water below 95°C (203°F).
•
Do not directly heat unit as this will damage thermostat.
Check valve lift.
- Replace thermostat if valve lift is below specification or valve is stuck.

    Repair procedures Replacement And Air Bleeding    • 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.

    Other information:

    Hyundai Palisade (LX2) 2020-2025 Service Manual: Heater Core

    Repair procedures Replacement 1. Disconnect the negative (-) battery terminal. 2. Remove the heater and blower assembly. (Refer to Heater - "Heater Unit") 3.

    Hyundai Palisade (LX2) 2020-2025 Service Manual: Front View Camera Unit

    Schematic diagrams Circuit Diagram Repair procedures Removal 1. Disconnect the negative (-) battery terminal. 2. Remove the inside rear view mirror cover (A) and rain sensor cover (B).

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