my Skoda Octavia NFL (2020-Present) overheats in stop-and-go traffic what's the cause

Solution

1. Preparation

• Gather tools: OBD-II scanner, coolant, socket set, torque wrench, thermometer, and safety glasses.
• Ensure the vehicle is parked on a level surface, and the engine is cool before starting work.

2. Check and Top-Up Coolant

• Sub-step 1: Open the hood and locate the coolant reservoir.
• Sub-step 2: Inspect the coolant level; if low, add the appropriate coolant mixture (refer to the owner's manual for specifications).
• Sub-step 3: Replace the cap securely after topping up.

3. Replace Thermostat (if faulty)

• Sub-step 1: Drain the coolant from the radiator into a suitable container.
• Sub-step 2: Remove any components obstructing access to the thermostat (such as hoses or engine covers).
• Sub-step 3: Unscrew the thermostat housing bolts using a socket set and carefully remove the housing.
• Sub-step 4: Take out the old thermostat and clean the mating surfaces.
• Sub-step 5: Install the new thermostat in the correct orientation and replace the housing, tightening bolts to the manufacturer’s torque specifications.
• Sub-step 6: Refill the cooling system with the appropriate coolant.

4. Inspect and Replace Radiator Fan (if necessary)

• Sub-step 1: Test the radiator fan by applying direct power to it to verify operation.
• Sub-step 2: If the fan does not operate, disconnect it and remove it from the mountings.
• Sub-step 3: Install the new fan assembly, ensuring it is securely mounted and connected to the electrical harness.

5. Check for Blockages in the Radiator

• Sub-step 1: Inspect the radiator for dirt, debris, or blockages in the fins.
• Sub-step 2: Clean the radiator using compressed air or a soft brush to remove any obstructions.
• Sub-step 3: If the radiator is severely clogged, consider replacing it with a new unit.