🔧 Prius - Rear Turn Signal Bulb Replacement

Your Prius uses a replaceable bulb for the rear turn signals. The job is done from inside the hatch area by removing a small access cover, twisting the bulb socket out, and swapping the bulb.

Difficulty Level: Beginner | Estimated Time: 0.3-0.6 hours

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⚠️ Safety & Precautions

• 🔸 Power the car OFF and keep the key fob away (at least 10 ft) so lights can’t turn on unexpectedly.
• 🔸 Let bulbs cool before touching them (they can get hot).
• 🔸 Don’t touch the glass of the new bulb with bare fingers; oils can shorten bulb life.

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🔧 Required Tools

You'll need the following tools for this repair:

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

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

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

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📋 Before You Begin

• Park on level ground and set the parking brake.
• Turn the vehicle OFF.
• Open the hatch and remove any cargo so you can access the side trim areas.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Open the rear access cover (left or right side)

• Open the hatch.
• On the side you’re replacing (driver or passenger), locate the small service/access cover in the interior trim behind the tail lamp area.
• Use a plastic trim removal tool to pop the access cover open.
• If it’s tight, carefully assist with a small flathead screwdriver (wrap the tip with a little tape if you have it). Go slow to avoid scuffs.

Step 2: Remove the turn-signal bulb socket

• Use a flashlight to look through the opening and find the turn signal bulb socket (it will be one of the sockets going into the tail lamp).
• Grip the socket and rotate it counterclockwise about 1/4 turn by hand, then pull it straight out.
• If your hand slips, use nitrile gloves for better grip.

Step 3: Replace the bulb

• Pull the old bulb straight out of the socket by hand using nitrile gloves.
• Push the new 7440A amber bulb straight into the socket until fully seated.
• Bulb tip: This is a “wedge” bulb—no twisting to remove/install.

Step 4: Reinstall the socket and access cover

• Insert the socket back into the tail lamp housing.
• Twist the socket clockwise about 1/4 turn by hand until it locks.
• Snap the interior access cover back into place.

Step 5: Repeat on the other side (recommended)

• Repeat Steps 1–4 for the opposite rear turn signal. Pair replacement helps match brightness.

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✅ After Repair

• Turn the car ON (READY not required) and test left and right turn signals.
• Walk behind the car and confirm the flash rate looks normal on both sides (a fast flash usually means a bulb isn’t working or isn’t seated).
• If one side doesn’t work, remove that socket again and re-seat the bulb firmly.

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💰 DIY vs Shop Cost

Shop Cost: $40-$110 (parts + labor)

DIY Cost: $6-$20 (parts only)

You Save: $34-$90 by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 0.3-0.6 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.