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2018 Mazda CX-9
2016 - 2023 Mazda CX-9
Inline 4 2.5L
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Mazda CX-9 Cabin Air Filter Replacement in 2 minutes 2016 2017 2018 2019 2020

Mazda CX-9 Cabin Air Filter Replacement in 2 minutes 2016 2017 2018 2019 2020

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How to Replace the Cabin Air Filter on a 2018 Mazda CX-9 (Glove Box Method)

Step-by-step instructions with tools/parts needed, airflow direction tips, and post-install checks for 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023

How to Replace the Cabin Air Filter on a 2018 Mazda CX-9 (Glove Box Method)

Step-by-step instructions with tools/parts needed, airflow direction tips, and post-install checks for 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023

Orion
Orion

🔧 CX-9 - Cabin Air Filter Replacement

Your CX-9’s cabin air filter cleans the air going into the HVAC system (heat/AC). Replacing it helps reduce odors, improves airflow, and keeps dust/pollen out of the cabin.

Difficulty Level: Beginner | Estimated Time: 0.2-0.5 hours


⚠️ Safety & Precautions

  • ⚠️ Turn the ignition OFF and remove the key/fob from the vehicle.
  • ⚠️ Don’t force plastic tabs; they can snap in cold weather.
  • ⚠️ Battery disconnect is not required for this job.

🔧 Required Tools

You'll need the following tools for this repair:

  • Nitrile gloves
  • Safety glasses
  • Flashlight

🔩 Required Parts

HowToo sells all the parts you need for this repair:

  • Cabin air filter - Qty: 1

📋 Before You Begin

  • 🅿️ Park on level ground and set the parking brake.
  • Turn the HVAC system OFF.
  • Move the front passenger seat back for more room.

🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Open the glove box

  • Open the glove box fully and remove any items inside.
  • Use flashlight to look at the right-side glove box damper (a small arm that slows the glove box).

Step 2: Disconnect the glove box damper

  • Use your hand (or nitrile gloves for grip) to gently pop the damper arm off its pin on the right side.
  • Damper = the little arm that prevents slamming.

Step 3: Release the glove box stops

  • With the glove box open, gently push in on both sides of the glove box (near the upper edges) to clear the built-in “stops.”
  • Once the stops clear, let the glove box swing down toward the floor.
  • Use safety glasses to protect your eyes from dust.

Step 4: Remove the cabin filter access cover

  • Behind the lowered glove box, find the cabin filter housing cover (a small rectangular door).
  • Use your hand to press the side tab(s) and pull the cover off.
  • Use flashlight to confirm the cover clips are fully released before pulling.

Step 5: Remove the old cabin air filter

  • Slide the old filter straight out of the housing.
  • Keep the filter level as you pull it out to avoid dumping leaves/dust.
  • Old filter can be very dusty—go slow.

Step 6: Install the new cabin air filter

  • Check the airflow direction marking on the filter frame (usually “AIR FLOW” with an arrow).
  • Install the new filter in the same orientation as the old one (match the arrow direction shown on the housing/old filter).
  • Slide it in straight—don’t bend or crush the pleats.

Step 7: Reinstall the cover and glove box

  • Reinstall the filter access cover by lining it up and pressing until it clicks.
  • Lift the glove box back up and push the sides in again so the stops pass back into place.
  • Reconnect the glove box damper arm on the right side (press it back onto the pin until it snaps on).

✅ After Repair

  • Start the vehicle and turn the fan to medium-high to confirm strong airflow.
  • Switch between fresh air and recirculation to make sure there are no unusual noises.
  • If you smell musty odor, consider running the fan for a few minutes with AC on.

💰 DIY vs Shop Cost

Shop Cost: ₹1,200-₹2,500 (parts + labor)

DIY Cost: ₹600-₹1,500 (parts only)

You Save: ₹600-₹1,000 by doing it yourself!

Shop labor rates vary but typically run ₹800-₹1,500/hour. This repair takes a shop approximately 0.2-0.5 hours.


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