🔧 Sonata - Rear Turn Signal Bulb Replacement

You’ll access the rear turn signal bulb from inside the trunk, remove the bulb socket, and swap in a new bulb. This restores proper signaling and keeps you legal and safe on the road.

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

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⚠️ Safety & Precautions

• ⚠️ Turn the lights OFF and remove the key before starting.
• ⚠️ Let the bulbs cool for a few minutes; they can get hot.
• ⚠️ Wear gloves and don’t touch the glass of a new bulb with bare fingers (skin oil can shorten bulb life).
• ⚠️ Keep the trunk propped securely so it can’t fall on you.
• ⚠️ Battery disconnect is not required for this job.

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🔧 Required Tools

You'll need the following tools for this repair:

• Trim panel removal tool (plastic)
• Phillips screwdriver #2
• Small flathead screwdriver (3mm)
• Work light
• Nitrile gloves
• Safety glasses

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Rear turn signal bulb - Replace in pairs - Qty: 2

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📋 Before You Begin

• 🅿️ Park on level ground and shift to Park.
• 🧰 Open the trunk and set up a work light so you can see behind the trunk liner.
• 🧩 A trim panel removal tool is a plastic pry tool used to pop clips without breaking them.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Access the rear lamp area from the trunk

• Put on nitrile gloves and safety glasses.
• Use a trim panel removal tool (plastic) to gently pop out the trunk liner clips near the rear corner you’re working on.
• If a clip is stubborn, use a small flathead screwdriver (3mm) to lift the clip’s center, then pry the clip body out with the trim panel removal tool (plastic).

Step 2: Remove the turn signal bulb socket

• Use your work light to locate the bulb sockets on the back of the tail lamp.
• Find the turn signal socket (it will be a twist-lock socket going into the tail lamp).
• Grip the socket and rotate it counterclockwise about 1/4 turn by hand, then pull it straight out.
• Don’t yank the wires.

Step 3: Replace the bulb

• Pull the old bulb straight out of the socket by hand.
• Install the new bulb by pushing it straight into the socket until fully seated.
• If you touched the bulb glass, wipe it with a clean dry paper towel before installing.

Step 4: Test the new bulb before reassembly

• Reinsert the socket into the tail lamp.
• Twist the socket clockwise by hand about 1/4 turn until it locks.
• Turn the ignition to ON and test the rear turn signal (and hazards).
• If it doesn’t work, turn ignition OFF and remove the socket again, then reinstall the bulb firmly and re-lock the socket.

Step 5: Reinstall the trunk liner

• Position the trunk liner back into place.
• Press the clips back in by hand. If needed, use a Phillips screwdriver #2 to snug any screw-type retainers (do not overtighten).

Assumption: Rear turn signal bulbs are accessed through the trunk on your Sonata (no tail lamp removal required).

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✅ After Repair

• ✅ Verify left and right rear turn signals blink normally (not fast).
• ✅ Check hazards, brake lights, and tail lights to make sure no other socket was disturbed.
• ✅ Make sure the trunk liner is secure and not rubbing any wiring.

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💰 DIY vs Shop Cost

Shop Cost: $60-$150 (parts + labor)

DIY Cost: $6-$25 (parts only)

You Save: $54-$125 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?

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.