my Skoda Octavia NFL (2020-Present) engine is overheating, what could be the problem?

Solution

1. Preparation

• Tools Required: Socket set, screwdriver set, coolant catch pan, OBD-II scanner.
• Ensure the engine is cool before starting work. Disconnect the battery to prevent electrical shorts.

2. Coolant Refill and Leak Repair

1. Drain Existing Coolant: Place a coolant catch pan under the radiator and open the drain valve to remove old coolant.
2. Inspect Components:
   • Check hoses for cracks or damage. Replace any faulty hoses.
   • Inspect the radiator for leaks or corrosion. If damaged, replace the radiator.
3. Refill Coolant: Use the manufacturer's specified coolant type. Fill the system slowly to prevent air pockets.
4. Bleed the Cooling System: Run the engine with the radiator cap off until the thermostat opens, then add more coolant as needed and replace the cap.
5. Check for Leaks: After refilling, run the engine and inspect for any leaks around the hoses and radiator.

3. Thermostat and Water Pump Replacement

1. Remove Thermostat:
   • Disconnect the upper radiator hose and remove the thermostat housing.
   • Replace the thermostat with a new unit, ensuring it is oriented correctly.
2. Inspect Water Pump:
   • If the water pump is leaking or noisy, remove it by detaching the drive belt and bolts.
   • Install a new water pump, ensuring all seals are properly placed.
   • Reattach the drive belt and ensure proper tension.

4. Cooling Fan Check

1. Inspect and Replace Cooling Fan:
   • If the cooling fans are not functioning, remove the fan assembly by disconnecting electrical connectors and unscrewing the mounting bolts.
   • Install a new fan assembly if necessary, ensuring it is properly connected to the electrical system.