🔧 Impreza - Headlight Bulb Replacement

Replacing worn headlight bulbs restores nighttime visibility and keeps you legal on the road. On your Impreza, the low-beam bulbs are accessed from the engine bay behind each headlight.

Assumption: “Headlight bulbs” = the two low-beam bulbs (most common failure).

Difficulty Level: Beginner | Estimated Time: 0.5-1.0 hours

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⚠️ Safety & Precautions

• ⚠️ Let headlights cool fully; bulbs get extremely hot.
• ⚠️ Do not touch the new bulb glass with bare fingers; skin oils can shorten bulb life.
• ⚠️ If you’ll work near the battery terminals, disconnect the negative terminal to prevent accidental shorts.
• ⚠️ Wear gloves and eye protection; tight spaces can cause cuts.

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🔧 Required Tools

You'll need the following tools for this repair:

• Safety glasses
• Nitrile gloves
• 10mm socket
• 1/4" ratchet
• 6" socket extension
• Trim clip remover (specialty)
• Small flashlight

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Low-beam headlight bulb (H11) - Replace in pairs - Qty: 2
• Dielectric grease - Qty: 1

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📋 Before You Begin

• Park on level ground, turn the lights off, remove the key, and open the hood.
• Let the headlights cool for at least 10 minutes.
• Lay a towel over the bumper edge to prevent scratches while you lean in.
• If you choose to disconnect the battery: use a 10mm socket to loosen the negative terminal and move it aside so it can’t spring back.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Create working room (if needed)

• Use a small flashlight to look behind each headlight and find the low-beam bulb socket (it’s the rear cover/socket closest to the center of the car).
• If your hands don’t fit comfortably:
• Use a trim clip remover (specialty) (a fork-shaped tool that pops plastic clips out) to remove any plastic push-clips holding the intake snorkel/duct near the headlight.
• Use a 10mm socket, 1/4" ratchet, and 6" extension to loosen/remove small brackets if they block access.
• Take a quick photo before moving anything.

Step 2: Unplug the bulb connector

• Reach behind the headlight and locate the electrical connector on the bulb.
• Press the connector lock tab with your thumb and pull straight back to unplug it.
• If it’s stuck, wiggle gently—do not pull on the wires.

Step 3: Remove the old bulb

• Grip the bulb base and rotate it counterclockwise about 1/8 turn to unlock.
• Pull the bulb straight out of the headlight housing.
• Use nitrile gloves so you don’t cut yourself or contaminate the new bulb.

Step 4: Install the new bulb (H11)

• With nitrile gloves on, insert the new bulb into the housing, aligning the tabs so it sits flush.
• Rotate clockwise about 1/8 turn until it locks.
• If you accidentally touch the glass, clean it with isopropyl alcohol and let it dry completely.

Step 5: Reconnect and protect the connector

• Add a very small dab of dielectric grease inside the connector (this helps keep moisture/corrosion out).
• Push the connector onto the bulb until it clicks.

Step 6: Repeat on the other side

• Do the same steps for the other low-beam bulb.
• Replace bulbs in pairs for matching color.

Step 7: Reinstall anything you moved

• Reinstall ducts/brackets and push-clips.
• Use the trim clip remover (specialty) to align clips, then press them fully seated by hand.
• If you disconnected the battery, reconnect the negative terminal using a 10mm socket and tighten securely.

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✅ After Repair

• Turn the headlights on and confirm both low beams work.
• Check high beams and turn signals too (sometimes a connector gets bumped).
• At night, park facing a wall and confirm both beams look even and not wildly mis-aimed.
• If a bulb doesn’t light: turn lights off, recheck the connector click, and confirm the bulb is fully locked in place.

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💰 DIY vs Shop Cost

Shop Cost: $120-$250 (parts + labor)

DIY Cost: $30-$80 (parts only)

You Save: $90-$170 by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 0.5-1.0 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.