🔧 Altima - Headlight Bulb Replacement

This replaces the two front headlight bulbs (left and right). Most Altima S models use halogen bulbs that twist-lock into the back of the headlight housing, so you usually do this from under the hood without removing the bumper.

Assumption: You mean the two low-beam headlight bulbs (one per side), typically H11 halogen.

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

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⚠️ Safety & Precautions

• ⚠️ Let headlights cool first; bulbs get extremely hot.
• ⚠️ Do not touch the new bulb’s glass with bare fingers; skin oil can shorten bulb life.
• ⚠️ Keep ignition OFF and lights OFF while unplugging connectors.
• ⚠️ Battery disconnect is not required, but you may disconnect the negative terminal if you’re worried about shorting a connector.

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🔧 Required Tools

You'll need the following tools for this repair:

• Nitrile gloves
• Safety glasses
• Flashlight
• 10mm socket
• 1/4" ratchet
• 6" extension for 1/4" ratchet
• Trim clip removal tool

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Low-beam headlight bulb (H11 halogen) - Qty: 2

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📋 Before You Begin

• Park on level ground, shift to Park, and set the parking brake.
• Open the hood and support it securely.
• Turn the headlight switch OFF and remove the key/fob from the car.
• A “twist-lock bulb” turns to unlock from the housing.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Create a little working room (as needed)

• On the passenger side, if access is tight, use a 10mm socket, 1/4" ratchet, and extension to loosen/remove the air intake snorkel/duct fasteners (if equipped) and move it slightly aside.
• If there are push-clips, pop them up using a trim clip removal tool.
• Only move parts enough to reach the bulb.

Step 2: Locate the low-beam bulb at the back of the headlight

• Use a flashlight to look behind the headlight assembly (from the engine bay).
• Find the bulb socket with an electrical connector plugged into it (rear of the housing).

Step 3: Unplug the electrical connector

• Put on nitrile gloves and safety glasses.
• Press the connector lock tab and pull the connector straight back off the bulb base (wiggle gently if needed).

Step 4: Remove the old bulb (twist-lock)

• Grip the bulb base and rotate it counterclockwise about 1/4 turn to unlock.
• Pull the bulb straight out of the headlight housing.

Step 5: Install the new bulb

• With nitrile gloves on, insert the new H11 bulb into the housing (align the tabs so it seats fully).
• Rotate the bulb clockwise about 1/4 turn until it locks in place.
• If you touched the glass, clean with alcohol.

Step 6: Reconnect and secure

• Push the electrical connector back onto the bulb until it clicks.
• Reinstall anything you moved (air duct/snorkel, clips, bolts) using a 10mm socket, 1/4" ratchet, and extension.
• If you removed any 10mm bolts, snug them firmly (no high torque needed for small plastic duct hardware).

Step 7: Repeat on the other side

• Do the same bulb replacement steps for the opposite headlight.
• Replace bulbs in pairs for even brightness.

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✅ After Repair

• Turn the headlights ON and confirm both low beams work.
• Check the bulbs look equally bright and aimed similarly.
• If a bulb doesn’t light, turn lights OFF and re-check the connector is fully seated and the bulb is fully twist-locked.

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💰 DIY vs Shop Cost

Shop Cost: $80-$180 (parts + labor)

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

You Save: $50-$100 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?

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