🔧 4Runner - Cabin Air Filter Replacement

Your A/C and heater pull air through a cabin air filter (also called the pollen filter) behind the glove box. Replacing it helps airflow, reduces musty smells, and keeps dust out of the cabin.

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

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⚠️ Safety & Precautions

• ⚠️ Turn the ignition OFF and keep the key away from the vehicle.
• ⚠️ Use gentle pressure on glove box panels to avoid cracking plastic clips.
• ⚠️ 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
• Small 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 shift to Park.
• Open the passenger door for easier access to the glove box area.
• Empty the glove box first.

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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 and remove any items inside.
• Use a small flashlight to look at the right side of the glove box for a small “damper” arm (a little shock-like strap that slows the glove box).

Step 2: Disconnect the glove box damper arm

• Using your hands (wear nitrile gloves), gently pop the damper arm off its pin on the right side of the glove box.
• The damper arm is a small linkage that controls how fast the glove box drops.

Step 3: Drop the glove box down

• Press inward on both sides of the glove box to clear the side stops.
• Lower the glove box fully so you can see the rectangular cabin filter housing behind it.
• Press evenly to avoid bending the box.

Step 4: Remove the cabin filter cover

• Find the filter cover door on the housing (a rectangular panel).
• Pinch the tabs and pull the cover off by hand while using a small flashlight to see the tabs clearly.

Step 5: Remove the old filter

• Slide the old cabin air filter straight out.
• Keep it level so dust and leaves don’t spill into the housing.

Step 6: Install the new filter (correct direction)

• Check the filter frame for an airflow arrow (often marked Air Flow).
• Install the new filter in the same orientation as the old one so the airflow arrow matches the housing direction.
• If your filter says UP, keep that side facing up as you slide it in.

Step 7: Reinstall the cover and glove box

• Reinstall the filter cover by pushing it on until the tabs click into place.
• Lift the glove box back up, squeeze the sides inward again, and let the side stops go back into position.
• Reconnect the damper arm on the right side by pressing it back onto its pin until it snaps on.

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✅ After Repair

• Start the engine and run the fan at all speeds to confirm strong airflow and no rattles.
• Turn on A/C and confirm there’s no whistling noise (a cover not fully clipped can cause this).
• If there’s odor, run fresh-air mode for 5 minutes.

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💰 DIY vs Shop Cost

Shop Cost: $60-$140 (parts + labor)

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

You Save: $45-$95 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.