The cabin air filter in a 2021 Honda Passport is located behind the glove box. To replace it, drop the glove box, remove the filter cover, swap in a new filter with the correct orientation, and reassemble.
In practice, this task involves locating the filter housing behind the passenger-side glove box, inspecting the filter for dirt and debris, and installing the replacement so that the airflow arrows point toward the blower. While the general procedure is the same across most Passport trims, some minor variations may apply depending on your vehicle’s exact configuration. Always refer to the owner’s manual if you encounter an unusual panel or fastener.
What you'll need
Before you start, gather a few items to speed up the process and keep the work area clean.
- New cabin air filter compatible with the 2021 Honda Passport
- Clean cloth or small vacuum for debris
- Flashlight or phone light for better visibility
- Optional: panel tool or flat-head screwdriver to help release glove box stops
- Gloves (optional)
Having the right tools at hand helps ensure a smooth replacement. If you don’t have a specific cabin air filter handy, you can purchase one from an authorized dealer or a reputable aftermarket supplier that fits the Passport.
Step-by-step replacement
Follow these steps in order to locate, remove, and replace the cabin air filter.
- Park the vehicle, turn off the engine, and set the parking brake for safety.
- Open the glove box and remove its contents so you can clearly access the area behind it.
- Gently squeeze the sides of the glove box to release the dampers/stops and allow the box to drop down (the glove box will hang down on its hinges).
- Look for the rectangular cabin air filter housing behind the glove box. It usually has a removable cover with small latches or tabs.
- Release the cover by pressing the tabs or turning the knob, and set the cover aside. Remove the old filter and note the orientation (the filter has an arrow indicating the direction of airflow toward the blower).
- Inspect and, if needed, clean the filter housing with a cloth to remove any accumulated debris.
- Insert the new filter into the housing with the arrow pointing toward the blower (in the same orientation as the old filter). \n
- Reattach the housing cover securely, ensuring the tabs or fasteners engage properly.
- Lift the glove box back into place, reattach the dampers/stops, and close the glove box. Start the vehicle and run the HVAC system to verify airflow from the vents.
Replacing the cabin air filter is a quick maintenance task, typically taking about 5–10 minutes once you’re familiar with the steps. If you encounter resistance when reinstalling the glove box, stop and double-check that the damper is aligned and the box is not catching on any wiring or trim.
Tips and maintenance notes
Extra guidance to keep your cabin air system in good shape.
- Consider replacing the cabin air filter every 12 months or 12,000–15,000 miles, whichever comes first, or more often in dusty or high-pollen environments.
- Always choose a filter that matches the Passport’s specification to ensure proper fit and filtration performance.
- Keep the area around the filter housing clean to prevent debris from entering the HVAC system during replacement.
If you’re uncertain about the location or encounter an unusual fastener, consult the owner’s manual or contact a certified Honda technician for assistance. Some trims or markets may have slightly different panel arrangements, but the general approach remains the same.
Summary
Replacing the cabin air filter on a 2021 Honda Passport is a straightforward DIY maintenance task. Locate the filter behind the glove box, remove the old filter, and install a new one with the airflow arrows toward the blower. Gather the right filter and basic tools, follow the steps carefully, and reassemble. Regular replacement helps maintain clean interior air and effective HVAC performance.