The cabin air filter on Infiniti QX80 sits behind the glove box on the passenger side, accessible by dropping the glove box to reveal the filter housing.
In most model years, you gain access by opening the glove box, releasing its dampers, and lowering the box to expose the filter cover. Replacement is a straightforward DIY task and is typically recommended about once a year or every 12,000 miles, with more frequent changes in dusty or urban environments.
Accessing the filter
The cabin air filter is located in the HVAC housing on the passenger side, directly behind the glove box. Access is gained by lowering the glove box after releasing its stops.
Replacement steps
Follow these steps to locate and replace the cabin air filter on the QX80.
- Park on a level surface, engine off, and apply the parking brake.
- Open the glove box and remove any contents.
- Gently press in on the sides of the glove box to release the stops and let the box drop down.
- Remove the filter housing cover to access the cabin filter.
- Take out the old filter and inspect the housing for debris.
- Insert the new filter with the arrows pointing toward the engine, ensuring it sits evenly in the housing.
- Reattach the filter housing cover, raise the glove box back into place, and snap it shut.
- Run the HVAC briefly to confirm proper airflow and listen for any unusual noises.
After replacement, keep a maintenance log and replace the filter on schedule, or sooner if you notice odors, reduced airflow, or increased cabin dust.
Summary
The Infiniti QX80’s cabin air filter is located behind the passenger-side glove box. Access is gained by lowering the glove box, replacing the filter with the correct orientation, and reassembling. Check your owner's manual for the exact replacement interval, but it is commonly around once a year or every 12,000 miles, depending on driving conditions.