Where the cabin air filter sits and what it does

The cabin air filter in a 2013 Hyundai Sonata is located behind the glove box on the passenger side. It traps dust, pollen, and other particles from outside air before that air reaches the cabin through your heating and air conditioning system. A clogged filter reduces airflow, makes your climate control work harder, and can leave odors in the car.

Hyundai recommends checking the filter every 15,000 miles and replacing it every 30,000 miles under normal driving conditions. If you drive in dusty areas or heavy traffic, you may need to replace it more often. The filter itself costs between $20 and $40 depending on the brand and where you buy it.

Key Takeaways

  • The cabin air filter is behind the glove box on the passenger side and takes about 10 minutes to replace yourself.
  • You will need a replacement filter (part number 97133-38000 or equivalent aftermarket filter) and possibly a screwdriver or trim tool.
  • Removing the glove box requires unclipping the side supports and sometimes disconnecting a damper rod, but no bolts are involved.
  • A new filter costs $20 to $40 and lasts 30,000 miles under normal conditions, making DIY replacement a straightforward money saver.

Tools and parts you need

You need the replacement filter itself. The OEM Hyundai part number is 97133-38000. Aftermarket filters from brands like Fram, Mann-Filter, or Bosch work as well and are often cheaper. Check the box to confirm it fits a 2013 Sonata before you buy.

For tools, you may need a Phillips screwdriver or a plastic trim removal tool to unclip the glove box. Many people can do this job with no tools at all by hand. Have a small flashlight ready so you can see inside the glove box opening.

How to remove the glove box

Open the glove box fully. On the inside of the glove box, you will see two clips on the left and right sides where the box connects to the dashboard. Squeeze or pull these clips inward to release the glove box from its hinges. The box will swing down.

Look underneath the glove box opening. You may see a damper rod (a small hydraulic strut) connected to the underside of the box. If present, disconnect it by pulling the rod away from its mounting point. This rod is not bolted; it straightforward clips on and off by hand.

Once the clips are released and the damper is disconnected, you can remove the glove box completely and set it aside. You now have clear access to the filter housing behind the opening.

Locating and removing the old filter

Behind the glove box opening, you will see a rectangular plastic housing. The cabin air filter sits inside this housing. The housing has a cover or door that slides or clips in place. Slide the cover out or unclip it to expose the filter.

The filter itself is a flat, pleated rectangle. Note which direction the arrow on the filter frame is pointing — this shows the direction of airflow. You will need to install the new filter in the same direction. Pull the old filter straight out and set it aside.

Installing the new filter

Before inserting the new filter, check the housing for any loose debris or dust. Wipe it out with a dry cloth if needed. Take the new filter and confirm the arrow is pointing in the same direction as the old filter was pointing.

Slide the new filter into the housing. It should fit snugly with no gaps around the edges. Once the filter is seated, slide the cover or door back into place until it clicks or seats fully. The filter is now installed.

Reinstalling the glove box

Reconnect the damper rod to the underside of the glove box if your car has one. Align the glove box with the hinge points on the dashboard and push it upward until the side clips snap into place. You should hear or feel a click on both sides.

Close the glove box to confirm it opens and closes smoothly. If it feels stuck or misaligned, open it again and reseat the clips. Once everything is aligned, you are done. The whole job typically takes 10 to 15 minutes.

When to replace the filter and what to watch for

Check the filter every 15,000 miles by removing the glove box and looking at it. If it appears dark, clogged, or dusty, replace it even if you have not hit 30,000 miles. Driving in dusty conditions, construction zones, or heavy city traffic can clog a filter faster than highway driving.

Signs that your filter needs replacement include reduced airflow from the vents, musty smells when you turn on the air conditioning, or the air feeling stale. If you notice any of these, pull the glove box and check the filter before your next scheduled service.

Frequently Asked Questions

Can I drive with a clogged cabin air filter?

Yes, but your air conditioning and heating will work less efficiently, and the motor will work harder. A very clogged filter can reduce airflow noticeably and allow odors to build up in the cabin. Replacing it restores normal performance.

What if I install the filter backward?

The filter will not work properly if the arrow points the wrong direction. Airflow will be restricted and the filter will clog faster. If you realize it is backward, remove the glove box again and flip the filter to the correct direction.

Do I need to replace anything else when I replace the cabin air filter?

No. The cabin air filter is independent. You do not need to replace the engine air filter or any other component at the same time, though you may want to check the engine air filter while you have the tools out.

Is there a cabin air filter on the driver's side too?

No. The 2013 Sonata has one cabin air filter, located behind the passenger-side glove box. It filters all air entering the cabin through the climate control system.

What brand of filter should I buy?

OEM Hyundai filters work well but cost more. Fram, Mann-Filter, and Bosch make aftermarket filters that fit the 2013 Sonata and cost less. Any filter rated for this model will work. Check the box to confirm the fit before you buy.