my Toyota Camry XV50 has a musty smell when I turn on the AC

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the vehicle battery to ensure safety.
• Allow the engine and AC system to cool before starting work.

2. Remove and Inspect Cabin Air Filter

• Locate the cabin air filter housing (usually behind the glove box).
• Remove the glove box by unfastening screws and detaching clips.
• Take out the old cabin air filter and inspect it for dirt or mold.
• Replace with a new cabin air filter if necessary.

3. Clean the Evaporator Core

• Remove the dashboard panel if necessary to access the evaporator core.
• Use a specialized HVAC cleaner or a mixture of water and vinegar.
• Spray the cleaner onto the evaporator core, ensuring even coverage.
• Let the cleaner sit for 10-15 minutes, then wipe away excess with a clean cloth.

4. Clear the AC Drain Line

• Locate the AC drain line under the vehicle.
• Use compressed air or a wire brush to clear any obstructions.
• Ensure the drain is flowing freely by pouring a small amount of water into it and checking for drainage.

5. Reassemble and Test

• Reattach any panels or components removed for access.
• Reconnect the vehicle battery.
• Start the engine and turn on the AC system to test for odor reduction.