🔧 4Runner - Both Low-Beam Headlight Bulb Replacement

This procedure replaces the left and right low-beam bulbs through the engine compartment. Your 4Runner uses replaceable H11 halogen low-beam bulbs; replacing both together keeps their brightness and color consistent.

Assumption: “Both headlight bulbs” means both low-beam bulbs, not the high-beam bulbs.

Difficulty Level: Beginner | Estimated Time: 20-30 minutes

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⚠️ Safety & Precautions

• Turn the headlights off and allow the bulbs to cool completely.
• Wear safety glasses and nitrile gloves. Halogen bulbs can become extremely hot.
• Do not touch the glass portion of a new bulb. Skin oil can create a hot spot and shorten bulb life.
• Do not force the bulb or electrical connector; the plastic locking tabs can break.
• Battery disconnection is not required for this repair.

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🔧 Required Tools

You'll need the following tools for this repair:

• LED inspection light
• Clean microfiber cloth
• Nitrile mechanic gloves
• Safety glasses

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• H11 halogen low-beam headlight bulbs - Qty: 2 - Replace in pairs

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📋 Before You Begin

• Park your 4Runner on level ground, select Park, engage the parking brake, and switch off the ignition.
• Turn the headlight control to OFF and remove the key from the vehicle area.
• Open the hood and support it securely.
• Wait at least 10 minutes if the headlights were recently operating.
• Unpack each new bulb by its plastic base. Keep the glass clean and protected until installation.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Identify the Low-Beam Bulbs

• Put on the safety glasses and nitrile mechanic gloves.
• Use the LED inspection light to look behind each headlight housing from inside the engine compartment.
• Locate the low-beam bulb at the rear of each outer projector lamp. It has a two-wire electrical connector attached directly to its plastic base.
• Do not remove the nearby high-beam bulb, which uses a different 9005 bulb type.

Step 2: Disconnect the Driver-Side Bulb

• Use the LED inspection light to see the connector locking tab.
• Press the locking tab with a gloved finger and pull the connector straight away from the bulb base.
• Pull on the connector body, not the wires.
• Wiggle gently if the connector feels tight.

Step 3: Remove the Driver-Side Bulb

• Grip the plastic bulb base with the nitrile mechanic gloves.
• Rotate the bulb approximately one-quarter turn counterclockwise when viewed from behind the headlight.
• Pull the bulb straight out without scraping its glass against the housing.
• No fastener torque specification applies because the bulb uses a quarter-turn locking base.

Step 4: Install the New Driver-Side Bulb

• Hold the new H11 bulb only by its plastic base while wearing the nitrile mechanic gloves.
• Align the bulb’s three locking tabs with the matching openings in the headlight housing.
• Insert the bulb fully, then rotate it clockwise approximately one-quarter turn until it stops securely.
• Reconnect the electrical plug until its locking tab clicks.
• Gently tug the connector body to verify that it is locked.
• If the glass is accidentally touched, clean it completely with the clean microfiber cloth before installation.

Step 5: Disconnect the Passenger-Side Bulb

• Move to the passenger side and use the LED inspection light to locate the matching low-beam bulb behind the headlight housing.
• Reach around the washer-fluid filler neck; it normally does not need to be removed.
• Press the electrical connector’s locking tab with a gloved finger and pull the connector straight off.
• Do not pull or twist the wiring harness.

Step 6: Replace the Passenger-Side Bulb

• Grip the bulb base with the nitrile mechanic gloves and rotate it counterclockwise approximately one-quarter turn.
• Pull the old bulb straight out.
• Align the three tabs on the new H11 bulb and insert it completely.
• Rotate the bulb clockwise approximately one-quarter turn until securely locked.
• Push the electrical connector onto the bulb until it clicks.
• No fastener torque specification applies because the bulb uses a quarter-turn locking base.

Step 7: Check the Installation

• Use the LED inspection light to confirm that both bulb bases sit flat against their housings.
• Check that both electrical connectors are fully seated and no wires are trapped or stretched.
• Use the clean microfiber cloth to remove any fingerprints from surrounding components.
• Remove all tools from the engine compartment and close the hood securely.

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✅ After Repair

• Start your 4Runner and switch on the low-beam headlights.
• Confirm that both bulbs illuminate steadily with similar brightness and color.
• Check the high beams separately to confirm the correct bulbs were replaced.
• Park approximately 7.5 metres from a wall and verify that the original beam pattern remains even. A bulb that sits crooked must be removed and correctly reseated.
• No scan-tool reset, coding, or infotainment procedure is required.
• If one bulb remains off, switch the lights off and recheck its electrical connector and bulb seating.

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💰 DIY vs Shop Cost

Shop Cost: ₹2,000-₹5,000 (parts + labor)

DIY Cost: ₹1,200-₹3,000 (parts only)

You Save: ₹800-₹2,000 by doing it yourself!

Labor rates around Sonīpat vary by workshop. This repair typically takes a shop approximately 0.3-0.5 hour.

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