The engine air filter is inside a rectangular plastic housing in the engine bay on the driver's side; the cabin air filter is behind the glove box on the passenger side. This article explains both locations and how to replace them safely.
Engine air filter location
To understand where to look under the hood, here are the main clues for the engine air filter area and how to access it.
What you’ll need
Before you start, gathering these items will help speed up the process:
- Replacement engine air filter sized for a 1.8L Toyota Corolla
- Flat-head screwdriver or small screwdriver (if your housing uses screws or special clips)
- Clean rag or towel for wiping debris
Note that some 2016 Corolla models use simple clip latches on the air box, while others may use a single retaining screw. Check the housing for the exact method.
To replace the engine air filter, follow these steps:
- Open the hood and locate the large black rectangular air box in the front-left corner of the engine bay (near the fender and intake hose).
- Release the clips or remove the retaining screw to lift the top off the air box.
- Take out the old filter and inspect the inside of the housing for debris.
- Insert the new filter with the airflow arrow pointing toward the engine, ensuring it sits snugly in the housing.
- Reattach the air box lid and secure the clips or screw firmly.
After replacing, it’s a good idea to start the engine and listen for any abnormal air sounds indicating a loose seal. Replacing the filter at regular intervals helps improve performance and fuel economy. Refer to your owner’s manual for recommended replacement intervals and conditions.
Cabin air filter location
The cabin air filter is located behind the glove box on the passenger side. Access requires removing the glove box damper and lowering the glove box to reveal the filter housing.
What you’ll need
Have these handy for a smooth cabin filter replacement:
- Replacement cabin air filter compatible with 2016 Corolla
- Small screwdriver or trim tool (optional, for prying panels)
- Clean cloth to wipe the housing area
With the glove box lowered, you’ll typically see a rectangular access panel or housing cover held in place by a few clips or screws.
To replace the cabin air filter, follow these steps:
- Open the glove box and remove any contents.
- Gently press in on the sides of the glove box to release the stops and drop the box down; if needed, detach the glove box damper from its clip.
- Locate and remove the cabin air filter cover or access panel.
- Take out the old filter, noting the airflow direction printed on the filter.
- Insert the new filter with the correct orientation, and replace the cover/panel securely.
- Raise the glove box back into place and reattach the damper if removed.
Replacing the cabin filter helps maintain interior air quality and can reduce odors, especially in driving environments with pollen or dust. Check the owner’s manual for the recommended replacement interval and conditions.
Summary
For a 2016 Toyota Corolla, the engine air filter lives in a rectangular plastic box in the engine bay on the driver’s side, while the cabin air filter sits behind the glove box on the passenger side. Replacing either filter is a straightforward, do-it-yourself maintenance task: remove the cover or housing, swap in a fresh filter with proper orientation, and reseal. Regular replacement helps maintain engine performance and interior air quality. If you’re unsure or uncomfortable with the process, consult a qualified technician.