🔧 Patriot - Cabin Air Filter Replacement

The cabin air filter cleans the air coming through your A/C and heater vents. Replacing it helps airflow, reduces odors, and keeps dust/pollen out of the cabin.

Difficulty Level: Beginner | Estimated Time: 0.25-0.75 hours

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⚠️ Safety & Precautions

• ⚠️ Turn the ignition OFF and remove the key before working under the dash.
• ⚠️ Don’t force plastic panels; warm cabin plastic breaks less easily.
• ⚠️ Battery disconnect is not required for this job.

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🔧 Required Tools

You'll need the following tools for this repair:

• Trim panel removal tool
• Phillips screwdriver #2
• 7mm socket
• 1/4" drive ratchet
• Flashlight
• Nitrile gloves
• Safety glasses

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Cabin air filter - Qty: 1
• Cabin air filter retrofit kit - Qty: 1 (only if not equipped)

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📋 Before You Begin

• Park on level ground and set the parking brake.
• Move the passenger seat back for working 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 drop the glove box

• Open the glove box fully.
• On the right side, disconnect the glove box damper arm (the small “slow-open” strap). Use a trim panel removal tool to gently pop it off if it’s tight. Damper arm = the piece that slows the door.
• Push inward on both glove box side walls to clear the stops, then let the glove box swing down.

Step 2: Locate the cabin filter access door

• Use a flashlight to look behind the dropped glove box at the HVAC housing (the big black plastic box).
• Look for a rectangular filter door/cover with tabs or small screws.

Step 3: Remove the filter door/cover

• If it has tabs, release them by hand or with a trim panel removal tool.
• If it has screws, remove them with a 7mm socket and 1/4" drive ratchet or a Phillips screwdriver #2 (depending on what’s installed).
• Set the cover and any screws aside.

Step 4: Remove the old cabin air filter

• Pull the filter straight out. Use nitrile gloves because it’s usually dusty.
• Check the airflow arrow on the filter frame before you toss it.

Step 5: Install the new cabin air filter

• Slide the new filter in the same way the old one came out.
• Make sure the airflow arrow matches the housing direction (typically down toward the blower). If your old filter’s arrow was different, match the direction you found it installed.
• Ensure the filter sits flat and fully seated (no curling edges).

Step 6: Reinstall the filter door/cover

• Reinstall the cover by snapping tabs back in place, or reinstall screws using a 7mm socket and 1/4" drive ratchet.
• Torque: Snug by hand only (plastic housing; do not overtighten).

Step 7: Reinstall the glove box

• Lift the glove box back up and push the sides inward to pass the stops again.
• Reconnect the damper arm on the right side (press it on until it clicks).
• Close the glove box.

Step 8: If you do NOT find a filter door (not equipped)

• Some Patriots were not equipped with a cabin filter from the factory.
• In that case, install a cabin air filter retrofit kit (it provides the correct access door and filter setup). This may require creating the access opening on the HVAC case per the kit instructions.
• Use a flashlight and follow the retrofit kit template exactly. Measure twice, cut once.

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✅ After Repair

• Start the engine and run the blower on all speeds.
• Confirm airflow is stronger and there are no new rattles behind the glove box.
• If you notice a musty smell, run A/C for a few minutes; mild odor can happen briefly with a new filter.

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💰 DIY vs Shop Cost

Shop Cost: $90-$180 (parts + labor)

DIY Cost: $15-$45 (parts only)

You Save: $75-$135 by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 0.3-0.7 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.