The 2020 Corolla has two air filters to consider: the engine air filter in the engine compartment and the cabin air filter behind the glove box. Both are designed for straightforward DIY access.
This article explains where to locate each filter, how to check them, and how to replace them with step-by-step instructions to help you maintain your vehicle’s performance and interior air quality.
Engine air filter location
The engine air filter sits inside a rectangular plastic housing in the engine compartment. In the Corolla, this housing is mounted toward the front of the engine bay, and the cover is held in place with clips or screws. You’ll recognize it as a large, black box with an intake hose connected to it.
Before you start the replacement, make sure the engine is cool and the hood is securely propped open. This list will guide you through the process.
Here is how to locate and replace the engine air filter:
- Open the hood and locate the rectangular engine air filter housing. It should be near the front of the engine bay with a large intake hose attached.
- Release the clips or remove the screws that secure the cover. Lift the cover off to expose the filter element inside.
- Remove the old filter and inspect it. If it appears dirty, clogged, or oily, replace it with a new one of the same size and specification.
- Insert the new filter into the housing with the airflow arrow pointing toward the engine/throttle body, ensuring it sits evenly and flush in the box.
- Reposition the cover and secure it with the clips or screws. Confirm that the intake hose and wiring are properly connected and not pinched.
- Close the hood and test start the engine to ensure there are no unusual sounds and that everything is seated correctly.
Replacing the engine air filter is a quick maintenance task that can improve acceleration, fuel efficiency, and overall engine performance when done at regular intervals.
Cabin air filter location
The cabin air filter is located behind the glove box on the passenger side of the vehicle. Access usually requires lowering the glove box or removing its cover to reveal the filter housing behind it. This filter cleans the air that enters the cabin through the HVAC system and helps reduce dust, pollen, and odors.
To prepare for this replacement, ensure the interior is clean and the vehicle is parked with the engine off. The following steps outline how to reach and replace the cabin filter.
Here is how to locate and replace the cabin air filter:
- Open the glove box and remove its contents. Some models require you to gently press the sides of the glove box to release the stops and allow it to drop down.
- Once the glove box is lowered, locate the cabin air filter cover or panel just behind it. Release the clips or tabs to remove the cover.
- Take out the old cabin filter and inspect it. If it is dirty, replace it with a new filter that matches the vehicle’s specifications.
- Install the new filter, ensuring the airflow direction indicated on the filter is correct for the HVAC system.
- Reattach the dust cover and close the glove box, making sure the glove box doors function smoothly.
- Start the car and run the HVAC briefly to verify proper airflow and operation.
A fresh cabin filter can improve interior air quality and reduce odors, especially in dusty or urban environments.
If you still can’t locate it
If you’re unsure about locating or replacing either filter, consult the owner’s manual for model-specific diagrams and interval recommendations. You can also watch model-specific tutorial videos or contact a Toyota dealership or trusted mechanic for assistance.
Summary
The 2020 Toyota Corolla includes two filters: an engine air filter in a rectangular housing in the engine bay and a cabin air filter behind the glove box on the passenger side. Both can be replaced with basic hand tools and careful handling. Check intervals in the manual—engine air filters typically every 30,000 miles and cabin air filters every 15,000–30,000 miles depending on driving conditions—and replace as needed to maintain performance and interior air quality.