my Skoda Octavia NFL (2020-Present) makes a musty smell when I turn on the AC, why?

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a level surface and the engine is off.

2. Cabin Air Filter Replacement

• Tools Required: Screwdriver set, vacuum cleaner.
• Sub-steps:
  1. Open the glove compartment and remove any contents.
  2. Locate the cabin air filter cover, typically behind the glove box.
  3. Remove the screws or clips securing the cover.
  4. Take out the old cabin air filter and inspect it for mold or debris.
  5. If necessary, clean the filter housing with a vacuum.
  6. Install a new cabin air filter, ensuring it is oriented correctly based on airflow direction.

3. Cleaning the AC Evaporator

• Tools Required: AC cleaner spray, soft brush, microfiber cloth.
• Sub-steps:
  1. Access the AC evaporator by removing the dashboard or relevant panels, if necessary.
  2. Spray the AC cleaner onto the evaporator coils to remove mold and mildew.
  3. Use a soft brush to gently scrub the coils if dirt is stubborn.
  4. Wipe down any excess cleaner with a microfiber cloth.
  5. Allow the system to dry before reassembling.

4. Clearing the Condensate Drain

• Tools Required: Compressed air or a flexible cleaning brush.
• Sub-steps:
  1. Locate the condensate drain, typically found on the underside of the vehicle.
  2. Use compressed air to blow out any blockages in the drain.
  3. If needed, insert a flexible cleaning brush to remove any debris.
  4. Ensure the drain is clear and water can flow freely.