🔧 Highlander - Headlight Bulb Replacement

Replacing both headlight bulbs on your Highlander is a simple repair done from behind each headlamp housing. You’ll remove the bulb access covers, unlock each bulb, install the new bulbs, and test low and high beam operation.

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

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⚠️ Safety & Precautions

• ⚠️ Turn the headlights and ignition OFF before touching any headlight connectors.
• ⚠️ Let the bulbs cool before removal; halogen bulbs can get very hot.
• ⚠️ Wear gloves and do not touch the glass part of a halogen bulb. Skin oil can shorten bulb life.
• ⚠️ Work with the hybrid system fully OFF and keep the smart key away from the vehicle.
• ⚠️ Do not touch orange high-voltage cables or hybrid components.

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🔧 Required Tools

You'll need the following tools for this repair:

• Nitrile gloves
• Safety glasses
• Flashlight
• Trim clip removal tool
• 10mm socket
• 3/8-inch drive ratchet
• Clean microfiber towel

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Low beam headlight bulbs - Qty: 2
• High beam headlight bulbs - Qty: 2

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📋 Before You Begin

• Park your Highlander on level ground facing a wall or garage door.
• Shift to Park and set the parking brake.
• Turn the headlights OFF.
• Turn the vehicle OFF completely.
• Move the smart key at least 15 feet away from the vehicle.
• Open the hood and let the bulbs cool for several minutes.
• For best light color and brightness, replace bulbs in pairs.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Open the Hood and Locate the Bulbs

• Use the hood release inside your Highlander, then lift the hood and secure it.
• Use a flashlight to look behind each headlamp housing.
• The low beam bulb is toward the outer headlamp area, and the high beam bulb is toward the inner headlamp area.
• A headlamp housing is the plastic assembly that holds the bulb and lens.

Step 2: Improve Access if Needed

• Use a trim clip removal tool to remove any plastic push clips blocking your hand access.
• A trim clip removal tool is a small fork-shaped tool that lifts plastic retainers without breaking them.
• Use a 10mm socket and 3/8-inch drive ratchet to remove any small bracket or cover bolt that blocks access.
• Set clips and bolts on a clean microfiber towel so they do not get lost.

Step 3: Remove the Driver-Side Low Beam Bulb

• Put on nitrile gloves and safety glasses.
• Use a flashlight to locate the driver-side low beam bulb connector behind the headlamp.
• Press the connector release tab by hand and pull the connector straight back from the bulb.
• Turn the bulb counterclockwise by hand about a quarter turn.
• Pull the bulb straight out of the headlamp housing.
• Do not twist or pry against the plastic housing.

Step 4: Install the Driver-Side Low Beam Bulb

• Hold the new low beam bulb by the plastic base only.
• If you accidentally touch the glass, wipe it gently with a clean microfiber towel.
• Insert the new bulb into the headlamp housing by hand.
• Turn the bulb clockwise by hand until it locks in place.
• Push the electrical connector onto the bulb until it clicks.
• Do not force the bulb.

Step 5: Remove the Passenger-Side Low Beam Bulb

• Use a flashlight to locate the passenger-side low beam bulb connector.
• Press the connector release tab by hand and pull the connector straight back.
• Turn the bulb counterclockwise by hand about a quarter turn.
• Pull the bulb straight out of the headlamp housing.

Step 6: Install the Passenger-Side Low Beam Bulb

• Hold the new low beam bulb by the plastic base only.
• Insert it into the headlamp housing by hand.
• Turn the bulb clockwise by hand until fully locked.
• Push the electrical connector onto the bulb until it clicks.
• Use a flashlight to confirm the bulb sits flat and sealed.

Step 7: Remove the Driver-Side High Beam Bulb

• Use a flashlight to locate the driver-side high beam bulb behind the inner headlamp area.
• Press the connector release tab by hand and pull the connector straight back.
• Turn the high beam bulb counterclockwise by hand about a quarter turn.
• Pull the bulb straight out of the housing.

Step 8: Install the Driver-Side High Beam Bulb

• Hold the new high beam bulb by its plastic base only.
• Insert it into the headlamp housing by hand.
• Turn the bulb clockwise by hand until it locks.
• Reconnect the electrical connector until it clicks.

Step 9: Remove the Passenger-Side High Beam Bulb

• Use a flashlight to locate the passenger-side high beam bulb.
• Press the connector release tab by hand and pull the connector straight back.
• Turn the bulb counterclockwise by hand about a quarter turn.
• Pull the bulb straight out of the housing.

Step 10: Install the Passenger-Side High Beam Bulb

• Hold the new high beam bulb by its plastic base only.
• Insert it into the headlamp housing by hand.
• Turn the bulb clockwise by hand until it locks in place.
• Reconnect the electrical connector until it clicks.

Step 11: Reinstall Covers, Clips, or Brackets

• Use a trim clip removal tool by hand to reinstall any plastic push clips.
• Use a 10mm socket and 3/8-inch drive ratchet to reinstall any small bracket or cover bolts.
• Tighten small cover bolts snug only. Torque to 5-7 Nm (44-62 in-lbs).

Step 12: Test the Headlights

• Turn the vehicle ON enough to operate the lights.
• Turn on the low beams and confirm both sides work.
• Switch on the high beams and confirm both sides work.
• Use the wall or garage door to compare beam height and brightness side to side.
• If one bulb does not light, turn the vehicle OFF and recheck the connector seating.

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✅ After Repair

• Make sure all electrical connectors are fully clicked into place.
• Check that no tools or old bulbs are left in the engine bay.
• Confirm both low beams and both high beams work before driving at night.
• If the beam pattern looks much higher or lower than before, have the headlight aim checked.

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💰 DIY vs Shop Cost

Shop Cost: $120-$260 (parts + labor)

DIY Cost: $35-$120 (parts only)

You Save: $85-$140 by doing it yourself!

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

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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.