🔧 Altima - Cabin Air Filter Replacement

This is an easy first DIY job. The filter sits behind the glove box, which lowers out of the way without removing screws. I’d use a charcoal filter in Sonīpat’s dusty air because it also helps cut traffic odors.

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

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⚠️ Safety & Precautions

• ⚠️ Switch the ignition and climate-control fan off before opening the filter housing.
• 🧤 Wear gloves because the old filter may contain dust, pollen, and debris.
• 🔌 Battery disconnection isn’t required.
• 📦 Empty the glove box first so its contents don’t become floor decorations.

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🔧 Required Tools

You'll need the following tools for this repair:

• Small LED flashlight
• Plastic trim removal tool (specialty)
• Nitrile work gloves
• Safety glasses

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Cabin air filter - Qty: 1

A disposable charcoal filter is my first pick for dust and outside odors. The matching cabin-filter aisle is open in the parts list.

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📋 Before You Begin

• 🚗 Park your Altima on level ground and switch the ignition off.
• 🌀 Turn the climate-control fan completely off.
• 📭 Open and empty the glove box.
• 🔎 Check the new filter for an airflow arrow before installation.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Disconnect the glove box damper

• Open the glove box fully and use the small LED flashlight to inspect its right side.
• Find the small plastic damper arm. The damper is the short arm that lets the glove box lower slowly.
• Use the plastic trim removal tool to gently lift the damper arm off its retaining pin.
• Support the glove box while releasing it.

Step 2: Lower the glove box

• Press both glove box side walls inward by hand until the plastic stops clear the dashboard opening.
• Slowly lower the glove box toward the passenger floor.
• Leave its lower hinges connected. Complete removal usually isn’t necessary.

Step 3: Remove the filter cover

• Use the small LED flashlight to locate the narrow rectangular filter cover on the HVAC housing behind the glove box.
• Release the cover’s retaining tab with your fingers.
• If the tab is tight, press it gently with the plastic trim removal tool. Don’t pry against the thin cover.
• Pull the cover away and place it somewhere safe.

Step 4: Remove the old filter

• Wear the nitrile work gloves and safety glasses.
• Note the direction of any airflow arrow printed on the old filter.
• Pull the old filter straight out. Compress its soft sides slightly if it catches on the opening.
• Keep the dirty side facing upward so debris doesn’t spill into the blower housing.

Step 5: Inspect the housing

• Use the small LED flashlight to check the empty filter slot.
• Remove loose leaves by hand while wearing the nitrile work gloves.
• Don’t push debris deeper into the HVAC housing.

Step 6: Install the new filter

• Match the new filter’s airflow arrow to the direction shown by the old filter or filter housing.
• Gently compress the filter’s sides and slide it evenly into the slot.
• Make sure the pleats aren’t folded over and the filter sits completely inside the housing.
• Never force it. Recheck its orientation instead.

Step 7: Reinstall the filter cover

• Position the filter cover over the opening by hand.
• Engage its locating edge first, then press the retaining tab until it clicks.
• Pull lightly on the cover to confirm it’s locked.

Step 8: Raise the glove box

• Lift the glove box and press both sides inward by hand.
• Guide the side stops back through the dashboard opening.
• Reconnect the damper arm to its retaining pin by hand.
• Open and close the glove box slowly to confirm smooth movement.

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✅ After Repair

• ✅ Start your Altima and run the fan at each speed.
• 🌬️ Confirm that airflow is strong and no fluttering or rubbing noise comes from behind the glove box.
• 🔍 If airflow is weak, switch the fan off and check that the filter isn’t folded or installed backward.
• 📅 Inspect the filter more often in dusty conditions. Replace it when it’s dark, clogged, musty, or airflow drops.

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💰 DIY vs Shop Cost

Shop Cost: $60-$120 (parts + labor)

DIY Cost: $14-$38 (parts only)

You Save: $22-$106 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?

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