🔧 Sonata - Cabin Air Filter Replacement

Your Sonata’s cabin air filter cleans the air coming through the HVAC (heat/AC) system before it reaches the cabin. Replacing it helps reduce odors, improves airflow, and keeps dust/pollen out of the vents.

Difficulty Level: Beginner | Estimated Time: 10-20 minutes

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⚠️ Safety & Precautions

• ⚠️ Make sure the car is fully OFF before working around the glove box and HVAC area.
• ⚠️ Don’t force plastic tabs; they can snap if bent too far.
• ⚠️ Battery disconnect is not required for this job.

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🔧 Required Tools

You'll need the following tools for this repair:

• Nitrile gloves
• Safety glasses
• Plastic trim removal tool
• Small flathead screwdriver
• Flashlight

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Cabin air filter - Qty: 1

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📋 Before You Begin

• Park on level ground and make sure the car is OFF.
• Open the passenger door for better access and lighting.
• Empty the glove box so nothing falls out during removal.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Open and clear the glove box

• Put on nitrile gloves and safety glasses.
• Open the glove box and remove all items.
• Use a flashlight to look along the right side of the glove box for the small “dampener” arm (a small linkage that slows the glove box as it opens).

Step 2: Release the glove box dampener

• Use a plastic trim removal tool to gently pop the dampener arm off its pin (if it’s tight).
• If needed, carefully assist with a small flathead screwdriver while supporting the arm with your other hand.
• Go slow—this plastic can crack.

Step 3: Lower the glove box for access

• Use your hands and gently push in the glove box sides to clear the stopper tabs (the little “ears” that normally prevent the glove box from dropping).
• Let the glove box swing downward slowly.
• Use a flashlight to locate the rectangular cabin filter access door directly behind the glove box.

Step 4: Remove the cabin filter door

• Use the plastic trim removal tool to press the locking tabs (usually one on each side) and pull the filter door straight off.
• Set the door aside where it won’t get stepped on.

Step 5: Remove the old cabin air filter

• Use your hands to slide the old filter straight out.
• Keep it level as you remove it so trapped debris doesn’t dump into the blower housing.
• Use a flashlight to check inside for leaves or dirt; do not push debris deeper.

Step 6: Install the new cabin air filter

• Use the flashlight to find the airflow direction marking on the filter (usually an arrow).
• Install the new filter in the same direction as the old one came out (match the airflow arrow).
• Slide it in straight and fully seated without bending the filter frame.

Step 7: Reassemble the glove box

• Reinstall the filter door by pushing it on until the tabs click, using your hands (assist with the plastic trim removal tool only if needed).
• Lift the glove box back up and push the sides in to get past the stopper tabs again.
• Reconnect the dampener arm onto its pin using your hands (assist gently with the plastic trim removal tool if tight).

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✅ After Repair

• Start the car and run the fan at medium/high for 30 seconds to confirm good airflow.
• Listen for any clicking or rubbing behind the glove box (a sign the filter door isn’t fully latched).
• If there’s a musty smell, run fresh air (not recirculate) for a few minutes.

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💰 DIY vs Shop Cost

Shop Cost: $80-$160 (parts + labor)

DIY Cost: $15-$35 (parts only)

You Save: $65-$125 by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 0.2-0.5 hours.

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🎯 Ready to get started?

HowToo makes it easy: same-day/2-day shipping on every part, plus all the tools and specialty tools you need! Check out the parts and tools sections below to add everything to your cart.