🔧 Highlander - Taillight Bulb Replacement

On your Highlander, the left and right taillight bulbs can be replaced from inside the rear cargo area. This is usually a quick job: open the access doors, twist out the bulb socket, swap the bulb, and test.

Difficulty Level: Beginner | Estimated Time: 0.3-0.7 hours

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⚠️ Safety & Precautions

• ⚠️ Turn the light switch OFF and remove the key before starting.
• ⚠️ Let bulbs cool; they can be very hot.
• ⚠️ Do not touch the glass of halogen bulbs with bare fingers; skin oils can shorten bulb life.
• ⚠️ No battery disconnect is required for this bulb replacement.

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🔧 Required Tools

You'll need the following tools for this repair:

• Plastic trim removal tool
• Small flathead screwdriver
• Nitrile gloves
• Safety glasses
• Flashlight

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Rear stop/tail light bulb (7443) - Qty: 2

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📋 Before You Begin

• Park on level ground and set the parking brake.
• Open the rear liftgate and remove any cargo near the taillight access areas.
• Have your flashlight ready so you can see the bulb sockets clearly.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Access the left taillight bulb area

• Open the liftgate.
• On the left side cargo trim, locate the small access door/cover behind the taillight area.
• Use a plastic trim removal tool to gently pop the access cover open.
• Tip: Pry slowly to avoid snapping clips.

Step 2: Remove the bulb socket

• Look for the taillight bulb socket (a round plastic base going into the taillight).
• Grip the socket and rotate it counterclockwise about 1/4 turn by hand.
• Pull the socket straight out.
• Tip: If it’s tight, wiggle gently—don’t force it.

Step 3: Replace the bulb

• Put on nitrile gloves. (These keep skin oils off the bulb.)
• Pull the old bulb straight out of the socket.
• Push the new 7443 bulb straight into the socket until fully seated.
• If your replacement is an LED type and it doesn’t work later, remove it and rotate 180° (polarity-sensitive).

Step 4: Reinstall the socket and close the access cover

• Insert the socket back into the taillight housing.
• Turn it clockwise about 1/4 turn until it locks.
• Tightening spec: Toyota does not publish a torque spec for this twist-lock socket—turn until fully locked, do not over-tighten.
• Snap the access cover back into place by hand.

Step 5: Repeat on the right side

• Move to the right side cargo trim access cover.
• Use the plastic trim removal tool to open it.
• Repeat Steps 2–4 with the second 7443 bulb.

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✅ After Repair

• Turn the light switch ON and verify both sides illuminate (parking lights).
• Press the brake pedal and confirm both brake lights get brighter (ask a helper or back up near a wall to see the reflection).
• If a bulb doesn’t work, re-check that the bulb is fully seated and the socket is fully locked.

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💰 DIY vs Shop Cost

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

DIY Cost: $10-$40 (parts only)

You Save: $70-$140 by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 0.3-0.7 hours.

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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.

Assumption: “Taillight bulbs” = the outer stop/tail bulbs (7443) on both sides.