🔧 Ignition Coils - Replacement

Your S60 uses individual coil-on-plug ignition coils, one per cylinder. Replacing a weak or failed coil can fix misfires, rough idle, hesitation, and check engine lights.

Difficulty Level: Beginner | Estimated Time: 0.5-1 hours

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⚠️ Safety & Precautions

• Let the engine cool fully before starting. Coils sit on a hot cylinder head.
• Turn the ignition off and keep the key/fob away from the vehicle.
• Disconnect the negative battery terminal if you want the safest approach.
• Do not pull on the coil wiring. Use the connector tab to release each plug.
• If the engine has misfired badly, do not keep driving it. Fuel can damage the catalytic converter.

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🔧 Required Tools

You'll need the following tools for this repair:

• 8mm socket
• 10mm socket
• Ratchet
• Short extension
• Trim tool
• Needle-nose pliers
• Torque wrench
• Safety glasses
• Mechanic gloves

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Ignition coil set - Qty: 4
• New spark plugs - Qty: 4

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📋 Before You Begin

• Park on level ground and set the parking brake.
• Let the engine cool down completely.
• If the engine cover is fitted, remove it first.
• Work one coil at a time so the wiring stays organized.
• Tip: Take a quick photo before unplugging anything.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Remove the engine cover

• Use the 8mm socket or trim tool to remove the engine cover fasteners, if equipped.
• Lift the cover straight up and set it aside.

Step 2: Unplug the first ignition coil

• Use your fingers to press the connector lock tab on the coil electrical connector.
• Pull the connector straight off the coil.
• Tip: Wiggle gently, don’t force it.

Step 3: Remove the coil retaining fastener

• If your coil has a retaining bolt, use the 10mm socket and ratchet to remove it.
• Set the bolt aside where it will not get lost.

Step 4: Pull out the ignition coil

• Grip the coil and pull it straight upward out of the spark plug tube.
• If it sticks, gently twist it while lifting.
• Inspect the boot for oil, cracks, or swelling.

Step 5: Install the new ignition coil

• Push the new coil straight down until it seats fully on the spark plug.
• If the coil has a fastener, reinstall it with the 10mm socket.
• Torque to factory specification.

Step 6: Reconnect the coil connector

• Push the electrical connector onto the new coil until it clicks.
• Lightly tug the connector to make sure it is locked in place.

Step 7: Repeat for the remaining coils

• Repeat the same process for the other cylinders.
• If one coil failed from age, replacing all four is the best long-term fix.

Step 8: Reinstall the engine cover

• Set the cover back in place.
• Reinstall any fasteners with the 8mm socket or trim tool.

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✅ After Repair

• Start the engine and let it idle.
• Make sure the idle is smooth and the check engine light is off.
• If the light stays on, scan and clear the misfire codes.
• Test drive gently and watch for hesitation or shaking.

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💰 DIY vs Shop Cost

Shop Cost: $300-$700 (parts + labor)

DIY Cost: $120-$350 (parts only)

You Save: $180-$350 by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 0.5-1 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.