There are two air filters in a 2023 Hyundai Elantra: the engine air filter in a rectangular housing in the engine bay on the driver’s side, and the cabin air filter behind the glove box on the passenger side. This article explains where they are and how to replace them.
Engine air filter: location and access
Where it is
The engine air filter is housed in a black plastic box in the engine bay, near the front-left corner (driver’s side). A large duct runs from the grille into the box and to the throttle body. The lid is secured with clips or screws.
Replacement steps
To replace the engine air filter, follow these steps:
- Park the car on a level surface and turn off the engine. Open the hood and locate the engine air filter housing on the driver’s side of the engine bay.
- Unclip or unbolt the top cover of the air box to expose the filter. You may need a screwdriver for stubborn clips.
- Remove the old filter and note its orientation. Check the inside of the housing for debris.
- Wipe the housing with a clean rag if needed and ensure the sealing surfaces are clean.
- Install the new filter with the air flow arrow pointing toward the engine (same orientation as the old one).
- Reattach the air box cover and secure the clips or screws. Reconnect any intake duct if you detached it.
- Close the hood and start the engine to verify there are no unusual noises or leaks.
Replacement guidance varies with driving conditions; in dusty or urban environments, more frequent changes may be required. Use the owner’s manual or consult a Hyundai technician for interval specifics.
Cabin air filter: location and access
Where it is
The cabin air filter is located behind the glove box on the passenger side. Access is gained by lowering or removing the glove box and removing a filter cover mounted near the firewall side of the dash.
Replacement steps
To replace the cabin air filter, follow these steps:
- With the vehicle parked and the engine off, remove items from the glove box.
- Gently push in the sides of the glove box to release the stoppers and lower the box downward.
- Locate and remove the cabin filter cover behind the glove box.
- Take out the old filter and inspect the housing for debris.
- Insert the new filter with the arrows pointing toward the blower motor as indicated on the filter.
- Reinstall the cover, lift the glove box back into place, and ensure it closes smoothly.
Cabin filters are typically replaced more frequently than engine filters, especially in dusty or urban environments. Refer to the owner's manual for exact replacement intervals and filter specifications (such as with activated carbon).
Summary
In short, the 2023 Hyundai Elantra has two filters: an engine air filter in the engine bay on the driver’s side, and a cabin air filter behind the glove box on the passenger side. Both can be changed with basic tools and careful attention to orientation. Regular replacement helps maintain engine performance and interior air quality.