🔧 CX-5 - Headlight Bulb Replacement

Your CX-5 Signature uses LED headlamp assemblies from the factory, so there usually are not separate replaceable low-beam or high-beam “bulbs” like older halogen headlights. If a headlight is out, the repair is typically replacement of the LED headlight unit or related control component, not a bulb swap.

Difficulty Level: Advanced | Estimated Time: 1.5-3.0 hours per side

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⚠️ Safety & Precautions

• ⚠️ Turn the headlights OFF and let the lamp assemblies cool before handling them.
• ⚠️ Disconnect the negative battery cable before unplugging headlamp connectors.
• ⚠️ Support the front bumper cover so it does not scratch the paint or strain wiring.
• ⚠️ The front radar/camera safety systems may require aiming or calibration if bumper-mounted components are disturbed.
• ⚠️ Do not open the sealed LED headlight housing. It is not serviced internally.

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🔧 Required Tools

You'll need the following tools for this repair:

• 10mm socket
• 8mm socket
• 1/4-inch ratchet
• 3/8-inch ratchet
• 6-inch extension 1/4-inch drive
• Phillips #2 screwdriver
• Flat-blade screwdriver 1/4-inch
• Plastic trim removal tool
• Panel clip remover
• Torque wrench 1/4-inch drive
• Torque wrench 3/8-inch drive
• Painter’s tape 1-inch
• Microfiber towel
• Floor jack rated 2-ton minimum
• Jack stands rated 2-ton minimum
• Wheel chocks
• Nitrile gloves
• Safety glasses
• Flashlight

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Left LED headlight assembly - Qty: 1 if failed
• Right LED headlight assembly - Qty: 1 if failed
• Front bumper cover push clips - Qty: 6-10 if damaged
• Fender liner push clips - Qty: 4-8 if damaged

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📋 Before You Begin

• 🅿️ Park your CX-5 on a flat surface facing a wall or garage door.
• 🔒 Shift to Park and set the parking brake.
• 🧱 Place wheel chocks behind the rear wheels.
• 💡 Turn the light switch OFF.
• 📏 Mark the current headlight beam height on the wall with painter’s tape 1-inch before disassembly.
• 🔋 Disconnecting the battery can reset some vehicle settings, so make sure you know your basic infotainment preferences before starting.
• 📌 A push clip is a reusable plastic fastener, but old clips often break during removal.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Protect the painted edges

• Use painter’s tape 1-inch along the bumper-to-fender edges and around the headlight edges.
• Place a microfiber towel over painted areas where tools may contact.
• Tip: Tape prevents beginner scratches.

Step 2: Disconnect the battery

• Open the hood.
• Use a 10mm socket and 1/4-inch ratchet to loosen the negative battery terminal nut.
• Lift the negative cable off the battery post and move it aside so it cannot spring back.

Step 3: Raise and support the front if needed

• Use a floor jack rated 2-ton minimum at the front center jacking point.
• Place jack stands rated 2-ton minimum under the approved front side support points.
• Lower the vehicle gently onto the stands.
• Keep the wheel chocks behind the rear wheels.

Step 4: Remove upper radiator cover fasteners

• Use a plastic trim removal tool or panel clip remover to lift the center pins of the upper plastic push clips.
• Remove the clips by hand once the center pins are raised.
• Use a 10mm socket, 1/4-inch ratchet, and 6-inch extension 1/4-inch drive to remove any upper bumper retaining bolts.
• Set all fasteners in order on a clean towel.

Step 5: Remove wheel-well fasteners

• Turn the steering wheel left to access the right front wheel well, then right to access the left front wheel well.
• Use a Phillips #2 screwdriver to remove the wheel-well screws at the bumper edge.
• Use a plastic trim removal tool or panel clip remover to remove the fender liner clips.
• Gently pull the liner back by hand to expose the bumper side retainers.

Step 6: Remove lower bumper cover fasteners

• Use a 10mm socket and 1/4-inch ratchet to remove the lower bumper bolts.
• Use a Phillips #2 screwdriver for any lower screws.
• Use a panel clip remover for lower plastic clips.

Step 7: Release the bumper cover sides

• At each front fender edge, pull the bumper cover outward by hand to release the side clips.
• Use a plastic trim removal tool only if needed to help the clip release.
• Do not yank the bumper cover away because fog lamp, parking sensor, or harness connectors may still be attached.

Step 8: Move the bumper cover forward

• With a helper, slide the bumper cover forward just enough to access the headlight mounting bolts.
• Support the bumper cover on a microfiber towel or padded surface.
• If connectors are tight, unplug them by pressing the release tabs by hand.

Step 9: Remove the left headlight assembly

• Use a 10mm socket, 3/8-inch ratchet, and 6-inch extension 1/4-inch drive to remove the headlight mounting bolts.
• Use the flashlight to check for hidden lower or side fasteners before pulling.
• Slide the headlight assembly forward by hand.
• Unplug the electrical connectors by pressing the locking tabs by hand.

Step 10: Install the left headlight assembly

• Plug the connectors into the new left LED headlight assembly until each connector clicks.
• Place the assembly into position by hand.
• Start all bolts by hand first to avoid cross-threading.
• Use a 10mm socket and torque wrench 3/8-inch drive to tighten the headlight mounting bolts to Torque to 7-9 Nm (62-80 in-lbs).

Step 11: Repeat on the right side

• Use a 10mm socket, 3/8-inch ratchet, and flashlight to remove the right headlight mounting bolts.
• Slide the right headlight assembly forward by hand.
• Unplug the connectors by pressing the release tabs by hand.
• Install the new right LED headlight assembly.
• Use a 10mm socket and torque wrench 3/8-inch drive to tighten the headlight mounting bolts to Torque to 7-9 Nm (62-80 in-lbs).

Step 12: Reconnect the battery for a function test

• Place the negative battery cable back on the battery post.
• Use a 10mm socket, 1/4-inch ratchet, and torque wrench 1/4-inch drive to tighten the terminal nut to Torque to 4-6 Nm (35-53 in-lbs).
• Turn the headlights ON and confirm both low beams illuminate.
• Test high beams, turn signals, parking lights, and daytime running lights.
• Turn the lights OFF after testing.

Step 13: Reinstall the bumper cover

• With a helper, align the bumper cover with the fender clips and upper support.
• Press the bumper sides into the fender retainers by hand until they click.
• Use a 10mm socket and 1/4-inch ratchet to reinstall the upper and lower bolts.
• Use a Phillips #2 screwdriver to reinstall the wheel-well and lower screws.
• Use your hands to reinstall push clips, pressing the center pins flush.
• Tighten small bumper bolts snugly only: Torque to 6-8 Nm (53-71 in-lbs).

Step 14: Reinstall wheel-well liners and covers

• Use your hands to position the fender liners behind the bumper edges.
• Use a Phillips #2 screwdriver to reinstall screws.
• Use replacement fender liner push clips where old clips are loose or broken.
• Use replacement front bumper cover push clips where needed.

Step 15: Lower the vehicle

• Use the floor jack rated 2-ton minimum to lift the front slightly off the jack stands.
• Remove the jack stands rated 2-ton minimum.
• Lower the vehicle slowly to the ground.
• Remove the wheel chocks.

Step 16: Check headlight aim

• Park on level ground facing the same wall used before disassembly.
• Turn the headlights ON.
• Compare the beam cutoff to your painter’s tape 1-inch marks.
• If the beam is clearly too high, too low, or uneven, use a professional headlight aiming tool.
• Tip: Bad aim blinds other drivers.

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✅ After Repair

• ✅ Confirm both headlights, high beams, turn signals, parking lights, and daytime running lights operate correctly.
• ✅ Check that the bumper cover gaps are even on both sides.
• ✅ After driving at night, verify the beam pattern is safe and not aimed into oncoming traffic.
• ✅ If adaptive lighting warnings appear, scan the vehicle and perform the required headlamp aiming or calibration procedure.
• ✅ If front radar or camera warnings appear, professional ADAS calibration may be required.

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💰 DIY vs Shop Cost

Shop Cost: $1,800-$3,500+ for both LED assemblies installed

DIY Cost: $1,000-$2,600+ for both assemblies

You Save: $500-$900 by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 2-4 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.