🔧 MDX - Cabin Air Filter Replacement

Your MDX’s cabin air filter cleans the air going into the HVAC system (heat/AC). Replacing it helps airflow, reduces odors, and keeps dust/pollen down inside the cabin.

Difficulty Level: Beginner | Estimated Time: 0.25-0.5 hours

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⚠️ Safety & Precautions

• ⚠️ Turn the ignition OFF and remove the key/fob from the vehicle.
• ⚠️ Don’t force the glove box; plastic tabs can snap.
• ⚠️ No battery disconnect is required for this job.

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🔧 Required Tools

You'll need the following tools for this repair:

• Flashlight
• Nitrile gloves
• Trim removal tool (plastic) (specialty)

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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 set the parking brake.
• Move the front passenger seat back for more room.
• Empty the glove box so nothing falls out.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Open and clear the glove box

• Open the glove box fully by hand.
• Remove any items inside so you can see and work clearly.
• Use a flashlight to look along the right side of the glove box for a small damper arm (a little plastic arm that slows the glove box from dropping).

Step 2: Disconnect the glove box damper

• On the right side, gently pop the damper arm off its peg using your fingers.
• If it’s tight, use a trim removal tool (plastic) (specialty) to gently pry it off. Pry gently to avoid breaking tabs.

Step 3: Drop the glove box down

• With both hands, press inward on the left and right sides of the glove box to clear the side “stops.”
• Let the glove box rotate down slowly. (It will hang lower and expose the cabin filter door behind it.)
• Use a flashlight to locate the rectangular cabin filter access door.

Step 4: Remove the cabin filter access door

• Pinch the two locking tabs on the filter door by hand.
• Pull the door straight off. Use nitrile gloves if you want to avoid dust on your hands.

Step 5: Remove the old cabin air filter

• Pull the filter straight out by hand.
• Keep it level so debris doesn’t dump into the filter housing.
• Use a flashlight to check the housing for leaves/dust; wipe out gently by hand (with nitrile gloves) if needed.

Step 6: Install the new cabin air filter (correct direction)

• Look for the airflow arrow on the filter frame.
• Install the new filter so the airflow arrow points toward the rear of the vehicle (toward the HVAC blower housing). Arrow direction matters for best filtering.
• Slide it in evenly by hand—don’t bend or crush the filter.

Step 7: Reinstall the filter door and glove box

• Reinstall the access door by hand until both tabs click.
• Lift the glove box back up, then press inward on the sides to pass the stops back into place.
• Reconnect the damper arm to its peg by hand (use the flashlight to line it up).

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✅ After Repair

• Start the engine and run the blower on medium speed to confirm good airflow and no rattles.
• Cycle HVAC modes (face/floor/defrost) to ensure everything sounds normal.
• If there was an odor, run fresh air (not recirc) for a few minutes.

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💰 DIY vs Shop Cost

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

DIY Cost: $15-$40 (parts only)

You Save: $65-$120 by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 0.3-0.5 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.