🔧 Highlander - Front Turn Signal Bulb Replacement

You’ll replace the front turn signal bulb by accessing the back of the headlight assembly from inside the engine bay. The bulb sits in a twist-lock socket, so it’s a quick job with minimal tools.

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

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⚠️ Safety & Precautions

• ⚠️ Turn the lights OFF and let the bulb cool before touching it.
• ⚠️ Don’t touch the new bulb glass with bare fingers; oils can shorten bulb life. Use gloves.
• ⚠️ Keep keys out of the ignition so lights can’t be switched on accidentally.
• ⚠️ Battery disconnect is not required for this repair.

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🔧 Required Tools

You'll need the following tools for this repair:

• Nitrile gloves
• Safety glasses
• Flashlight
• Trim clip removal tool

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Front turn signal bulb (amber, 7440A) - Qty: 2 Replace in pairs

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📋 Before You Begin

• Park on level ground, shift to Park, and set the parking brake.
• Turn the headlight switch to OFF and make sure the turn signals are off.
• Open the hood and have a flashlight ready so you can see behind the headlight.
• If a plastic air guide or cover blocks access on your side, remove its push-clips using a trim clip removal tool. (A push-clip is a plastic fastener that pops out.)

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Locate the front turn signal socket

• Open the hood and look behind the headlight on the side you’re working on.
• Use a flashlight to find the twist-lock bulb socket for the turn signal (it’s on the back of the headlight housing).

Step 2: Remove any cover or air guide (if equipped)

• If something blocks your hand from reaching the socket, remove the plastic push-clips with a trim clip removal tool.
• Set the clips aside so they don’t get lost.

Step 3: Remove the turn signal bulb socket

• Put on nitrile gloves and safety glasses.
• Grip the socket and rotate it about 1/4 turn counterclockwise by hand, then pull it straight out.
• If it’s tight, wiggle—don’t force.

Step 4: Replace the bulb

• Pull the old bulb straight out of the socket (no twisting for this style).
• Install the new front turn signal bulb (amber, 7440A) by pushing it straight in until fully seated.
• Keep the bulb clean—use nitrile gloves so you don’t touch the glass.

Step 5: Reinstall the socket

• Insert the socket back into the headlight housing.
• Rotate clockwise about 1/4 turn until it locks in place by hand.

Step 6: Reinstall any removed clips/covers

• Reinstall the plastic air guide/cover and push-clips you removed.
• Press the center pins back in to lock the clips (use the trim clip removal tool if needed to align them).

Step 7: Repeat on the other side

• Do the same procedure on the opposite headlight so both bulbs match in brightness and color.

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✅ After Repair

• Turn the ignition to ON and test the left and right turn signals.
• Turn on the hazard lights and walk around the Highlander to confirm both front signals flash evenly.
• If it doesn’t light up, remove the socket and make sure the bulb is fully seated and the socket is fully locked.
• If it flashes fast, one of the turn signal bulbs is still out (check front and rear on that side).

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💰 DIY vs Shop Cost

Shop Cost: $90-$180 (parts + labor)

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

You Save: $60-$160 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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