🔧 CX-5 - Taillight Bulb Replacement

You’ll access the rear lamp housings, remove the bulb sockets, and swap the bulbs without removing the bumper. On your CX-5, there are bulbs in the outer body lamp and (depending on function) the inner liftgate lamp.

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

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⚠️ Safety & Precautions

• ⚠️ Turn the ignition off and remove the key before starting.
• ⚠️ Let bulbs cool before touching; hot bulbs can burn you.
• ⚠️ Don’t touch new bulb glass with bare fingers; oils can shorten bulb life.
• ⚠️ Support the lamp as you pull it out so you don’t crack the lens.
• ⚠️ Battery disconnect is not required, but keep lights switched off.

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🔧 Required Tools

You'll need the following tools for this repair:

• 10mm socket
• 1/4" drive ratchet
• 3" extension (1/4" drive)
• Trim removal tool (plastic) (specialty)
• Phillips #2 screwdriver
• Torque wrench (in-lb or low-range Nm) (specialty)
• Nitrile gloves
• Safety glasses

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Rear brake/tail light bulb (outer lamp) - Qty: 2
• Rear turn signal bulb (outer lamp) - Qty: 2
• Rear reverse light bulb (liftgate lamp, if equipped with bulb) - Qty: 2
• Replacement trim clips (rear side trim access covers) - Qty: 2-6

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📋 Before You Begin

• Park on level ground and set the parking brake.
• Open the rear liftgate for access and better lighting.
• If you’re unsure which bulb is out, have a helper press the brake pedal and operate the turn signals while you watch.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Identify which rear lamp section you’re servicing

• The outer lamp is on the body (rear quarter panel) and usually contains brake/tail and turn bulbs.
• The inner lamp is on the liftgate and often contains the reverse light (varies by configuration).
• Match the bulb to the function, not just size.

Step 2: Access the outer taillight fasteners (body-mounted lamp)

• Open the liftgate.
• Inside the cargo area near the lamp, remove the small access cover using a trim removal tool (plastic) (specialty) (a plastic pry tool that lifts panels without scratching).
• Remove the taillight retaining nuts using a 10mm socket, 3" extension (1/4" drive), and 1/4" drive ratchet.

Step 3: Remove the outer taillight assembly

• With one hand supporting the lamp, pull the taillight straight rearward to release the locating pins.
• If it feels stuck, wiggle gently—do not pry on the painted body with a screwdriver.

Step 4: Remove the bulb socket(s)

• Twist the bulb socket counterclockwise by hand and pull it out of the lamp housing.
• If a socket is tight, use nitrile gloves for better grip.

Step 5: Replace the bulb(s)

• Pull the old bulb straight out of the socket.
• Install the new bulb by pushing it straight into the socket until fully seated.
• Do not touch the bulb glass with bare fingers; use nitrile gloves.

Step 6: Reinstall the socket(s) and test

• Insert the socket into the housing and twist clockwise to lock.
• Before reinstalling the lamp, test the function (tail lights, brakes, turn signals, hazards).

Step 7: Reinstall the outer taillight assembly

• Align the locating pins and press the lamp straight into place.
• Install the retaining nuts using a 10mm socket and 1/4" drive ratchet.
• Torque to 5 Nm (44 in-lbs) using a torque wrench (in-lb or low-range Nm) (specialty).
• Reinstall the access cover by pressing it back in place.

Step 8: Inner liftgate lamp bulbs (if your failed bulb is on the liftgate)

• Remove the liftgate inner trim access cover (or trim panel section) using a trim removal tool (plastic) (specialty).
• Remove any retaining screws with a Phillips #2 screwdriver if present.
• Twist the bulb socket counterclockwise by hand, replace the bulb, then twist clockwise to lock.

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✅ After Repair

• Confirm left and right tail lights, brake lights, and turn signals work correctly.
• Verify the lamp sits flush to the body and liftgate (no gaps).
• If a new bulb doesn’t light, remove the socket and re-seat the bulb, then re-test.

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💰 DIY vs Shop Cost

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

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

You Save: $40-$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?

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.