my Toyota Corolla E140 (2006-2013) has a weird smell coming from the vents

Solution

1. Preparation

• Ensure the vehicle is parked on a flat surface.
• Disconnect the negative battery terminal to prevent electrical issues during repairs.

2. Replace Cabin Air Filter

• Remove the glove compartment by unscrewing retaining screws and detaching it from the dashboard.
• Locate the cabin air filter housing, usually behind the glove compartment.
• Remove the old cabin air filter and inspect it for dirt and debris.
• Insert a new cabin air filter, ensuring it is oriented correctly.
• Reassemble the glove compartment.

3. Inspect and Clean the HVAC System

• Access the HVAC system by removing the dashboard cover or panels if necessary.
• Use a vacuum to remove any debris from the evaporator core area.
• Spray a disinfectant cleaner specifically designed for HVAC systems onto the evaporator core to eliminate mold and mildew.
• Allow it to sit for the recommended time on the product label.

4. Clear the Evaporator Drain

• Locate the evaporator drain hose under the vehicle.
• Check for blockages in the drain hose and clear any debris using compressed air or a small brush.
• Ensure the drain is functioning correctly by pouring a small amount of water into the drain from above and verifying proper drainage.