🔧 Highlander - Rear Turn Signal Bulb Replacement

The rear turn signal bulb is replaced from inside the cargo area by removing the tail lamp access trim, then swapping the bulb holder out of the rear lamp assembly. This is a straightforward job and is best done in pairs so both rear signals match in brightness and age.

Difficulty Level: Beginner | Estimated Time: 0.5-1 hour

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⚠️ Safety & Precautions

• Turn the ignition off and remove the key/fob from the vehicle.
• Let the bulbs cool before touching the lamp assembly. Halogen bulbs can be hot.
• Use a plastic trim tool if possible so you do not scratch the cargo trim.
• Do not touch the new bulb glass with bare fingers if the bulb is halogen.
• No battery disconnect is required for this repair.

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🔧 Required Tools

You'll need the following tools for this repair:

• Plastic trim removal tool
• Small flat blade screwdriver
• Gloves
• Safety glasses

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Rear turn signal bulb, 7440A amber - Qty: 2

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📋 Before You Begin

• Park on level ground and set the parking brake.
• Open the rear liftgate.
• Make sure the exterior lights are off.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Open the cargo access area

• Open the rear liftgate and move any cargo away from the side you are working on.
• Use your hands to pull back the small rear interior access panel behind the tail lamp area.
• Be gentle with the plastic clips.

Step 2: Remove the bulb access cover

• Use a plastic trim removal tool to pop off the rear lamp access cover.
• Set the cover aside where it will not get lost.

Step 3: Remove the turn signal bulb socket

• Reach into the rear lamp housing and locate the turn signal bulb socket.
• Use your hand to rotate the socket counterclockwise about a quarter turn, then pull it straight out.
• Do not force it if it resists.

Step 4: Replace the bulb

• Use your fingers or a small flat blade screwdriver to release the bulb from the socket if needed.
• Install the new 7440A amber bulb into the socket.
• Make sure the bulb seats fully and locks in place.

Step 5: Reinstall the socket

• Insert the bulb socket back into the lamp housing.
• Use your hand to rotate it clockwise until it locks.
• Reinstall the access cover and press it firmly into place.

Step 6: Test the new bulb

• Turn on the ignition and activate the left and right turn signals.
• Check that the new bulb flashes at the correct brightness.
• If the bulb does not work, remove the socket and verify the bulb is fully seated.

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✅ After Repair

• Verify both rear turn signals flash normally.
• Check the hazard lights too.
• Make sure the lamp cover and cargo trim are fully snapped back into place.

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💰 DIY vs Shop Cost

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

DIY Cost: $10-$30 (parts only)

You Save: $70-$150 by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 0.5-1 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.