my Skoda Octavia NFL (2020-Present) is overheating what's causing it

Solution

1. Preparation

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

2. Coolant Level Check

• Remove the coolant reservoir cap and check the coolant level.
• If low, top off with a 50/50 mix of coolant and distilled water.
• Inspect for leaks around the reservoir and hoses.

3. Thermostat Replacement

• Locate the thermostat housing and remove the retaining bolts.
• Disconnect the hose attached to the thermostat housing.
• Remove the old thermostat and clean the mating surfaces.
• Install the new thermostat in the correct orientation and reattach the housing.

4. Radiator Inspection and Cleaning

• Remove the radiator cap and inspect for debris or blockages.
• If clogged, use a garden hose to gently flush the radiator.
• Check for external damage; replace the radiator if necessary.

5. Refill and Bleed the Cooling System

• Refill the cooling system with the appropriate coolant mixture.
• Start the engine and allow it to reach operating temperature.
• Open the bleeder valve (if equipped) to release trapped air until coolant flows steadily.