my Skoda Octavia NFL (2020-Present) has an overheating issue, what are the causes?

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the engine is cool before starting the work.
• Disconnect the battery to avoid any electrical issues.

2. Coolant Level Correction

• Tools Required: Coolant funnel, new coolant
• Sub-steps:
  1. Locate the coolant reservoir and remove the cap.
  2. If the coolant level is low, add the appropriate type of coolant as specified in the owner’s manual.
  3. Replace the cap securely.

3. Radiator and Hose Inspection

• Tools Required: None
• Sub-steps:
  1. Visually inspect the radiator and hoses for cracks, leaks, or blockages.
  2. If any leaks are found, replace the affected hoses or radiator as necessary.

4. Cooling Fan Operation

• Tools Required: Multimeter
• Sub-steps:
  1. Start the engine and allow it to reach operating temperature.
  2. Check if the cooling fans activate when the engine reaches a certain temperature (typically around 90°C).
  3. If fans do not operate, test the fan motor with a multimeter; replace if faulty.

5. Thermostat Replacement

• Tools Required: Socket set, torque wrench, replacement thermostat
• Sub-steps:
  1. Drain the coolant from the radiator into a suitable container.
  2. Locate the thermostat housing and remove the bolts using a socket set.
  3. Remove the old thermostat and clean the mating surfaces.
  4. Install the new thermostat in the correct orientation and reattach the housing.
  5. Torque the bolts to the manufacturer's specifications.

6. Water Pump Inspection and Replacement

• Tools Required: Socket set, coolant drain container, replacement water pump
• Sub-steps:
  1. If the water pump is suspected to be faulty, drain the coolant.
  2. Remove the drive belt from the water pump.
  3. Unbolt and remove the water pump from the engine.
  4. Install the new water pump and tighten bolts to the specified torque.
  5. Refill the cooling system with the proper coolant mixture.