The cabin air filter cleans the air coming through your car's vents, and a clogged one weakens airflow and can cause musty smells. On most cars it is a simple part behind the glovebox that you can swap in a few minutes with no tools. Here is the general process.
What you'll need
- A replacement cabin air filter for your make and model
- Your owner's manual
- Optional: a small screwdriver
Step by step
- Find the right filter and locationCheck your owner's manual for the correct part number and the filter's location, which on most cars is behind the glovebox or under the dashboard.
- Open the housingEmpty the glovebox and release it, or open the vent panel, following the manual so you reach the rectangular filter cover behind it.
- Remove the old filterSlide out the old filter and note which way the airflow arrows point so you install the new one the same way.
- Insert the new filterFit the new filter with its airflow arrows pointing in the same direction as the old one, usually downward toward the blower.
- Reassemble everythingClose the housing cover, refit the glovebox or panel, and make sure any clips or stops click back into place.
Handy tips
- Take a photo of the old filter before removing it so you can match the orientation.
- Many makers suggest replacing it roughly every 12,000 to 15,000 miles, or sooner in dusty conditions.
- If airflow was weak or smelled musty, a new filter often fixes both.
FAQ
How do I know it needs changing?
Common signs are weak airflow from the vents, a dusty or musty smell, and more fogging on the windows. A visibly gray, leaf-filled filter is due.
Is the cabin filter the same as the engine air filter?
No. The cabin filter cleans air for the passengers, while the engine air filter cleans air for combustion. They are separate parts in different places.
Do I need any tools?
Usually not. Most cabin filters are held by clips or a snap-in cover, though a few models need a screwdriver to remove a panel.