my Skoda Octavia NFL (2020-Present) overheats in hot weather what's causing it

Solution

1. Preparation

• Gather tools and parts required for the repair.
• Ensure the engine is cool and disconnect the battery to avoid electrical issues.

2. Coolant Replacement

• Sub-steps:
  1. Locate the coolant reservoir and radiator cap; remove the cap carefully.
  2. Drain the old coolant from the radiator by opening the drain valve.
  3. Close the drain valve and refill the radiator with a mixture of 50/50 coolant and distilled water.
  4. Reinstall the radiator cap securely.

3. Thermostat Replacement (if faulty)

• Sub-steps:
  1. Remove the engine cover (if applicable) to access the thermostat housing.
  2. Disconnect the thermostat housing by removing the bolts (typically Torx or socket).
  3. Remove the old thermostat and clean the mating surfaces.
  4. Install the new thermostat in the correct orientation and replace the housing.
  5. Torque the housing bolts to the manufacturer’s specifications.

4. Radiator Fan Testing/Replacement

• Sub-steps:
  1. Inspect the fan motor and wiring for any signs of damage.
  2. Test the fan operation by connecting it directly to a power source; if it does not run, replace it.
  3. Reinstall the fan assembly and reconnect wires securely.

5. Final Checks

• Sub-steps:
  1. Reconnect the battery and start the engine.
  2. Monitor the temperature gauge and check for leaks while the engine is running.
  3. Conduct a test drive to ensure proper operation and cooling.

Tools Required:

• OBD-II scanner
• Socket set
• Screwdrivers
• Torque wrench
• Coolant container
• Pliers

Parts Required:

• Engine coolant
• Thermostat (if faulty)
• Radiator fan (if faulty)

Estimated Repair Time: 2-4 hours

Safety Warnings:

• Allow the engine to cool completely before opening the radiator cap to prevent burns.
• Disconnect the battery before working on electrical components.