Skoda Octavia NFL (2020-Present) coolant leak under the car, what to check?

Solution

1. Preparation

• Gather all necessary tools and parts.
• Ensure the engine is cool and the vehicle is on a level surface.
• Disconnect the battery to prevent any electrical issues.

2. Identify and Repair the Leak

• Coolant Reservoir:

  • If cracked, replace the coolant reservoir.
  • Tools Required: Socket set, pliers
  • Safety Warning: Wear gloves as coolant can be harmful.

• Hoses:

  • If any hoses are damaged, replace them. Cut the old hose with a hose cutter and install a new one.
  • Tools Required: Hose cutter, clamp pliers
  • Ensure clamps are tightened correctly.

• Water Pump:

  • If the water pump is leaking, drain the coolant, remove the water pump, and replace it with a new one.
  • Tools Required: Socket set, torque wrench
  • Torque specifications: Follow manufacturer's guidelines (typically around 20-25 Nm for water pump bolts).

• Radiator:

  • If the radiator shows signs of leaks or corrosion, replace it.
  • Tools Required: Socket set, coolant funnel
  • Safety Warning: Ensure the coolant is drained before removing the radiator.

• Heater Core:

  • If leaking, the heater core will need to be accessed from the inside. Remove the dashboard as necessary to gain access, and replace with a new unit.
  • Tools Required: Socket set, screwdriver set
  • Follow service manual instructions for reassembly.

3. Refill and Bleed the Cooling System

• After repairs, refill the cooling system with the appropriate coolant type.
• Tools Required: Coolant funnel
• Safety Warning: Do not open the radiator cap while the engine is hot.