🔧 Seltos - Ignition Coil Replacement

Ignition coils sit on top of each spark plug and create the high voltage needed to fire the plug. Replacing a bad coil can fix misfires, rough idle, flashing check-engine light, and loss of power.

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

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⚠️ Safety & Precautions

• ⚠️ Work on a cool engine; coils sit on a hot cylinder head.
• ⚠️ Keep the ignition OFF and key away from the vehicle.
• ⚠️ If you’ll unplug multiple coils, label connectors with masking tape to avoid mix-ups.
• ⚠️ Optional but safest: disconnect the negative battery cable to prevent accidental shorts.

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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)
• Torque wrench (inch-pound or small Nm range)
• Small flat trim tool
• Needle-nose pliers
• Shop light
• Nitrile gloves
• Safety glasses

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Ignition coil - Qty: 1 (or Qty: 4 if replacing all)
• Dielectric grease (spark plug boot grease) - Qty: 1

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📋 Before You Begin

• Park on level ground and set the parking brake.
• Let the engine cool fully.
• If your Seltos is the turbo 1.6L, you may have extra ducting/intercooler plumbing on top; if it’s the non-turbo engine, the coils are usually exposed after the engine cover comes off.
• Quick check so I give you the exact layout: do you see a “Turbo” badge and a large tube/duct across the top of the engine? (Yes = turbo layout, No = non-turbo layout.)

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Remove the engine cover (if equipped)

• Grip the cover firmly and pull upward to pop it off its rubber grommets.
• If it feels stuck, use a small flat trim tool to gently lift an edge, then pull up by hand.

Step 2: Move any intake/engine ducting out of the way (turbo layout only)

• Use needle-nose pliers to release any small hose clips you need to move.
• Use a 10mm socket with a 1/4" drive ratchet to remove any small brackets holding the ducting/covering over the coils.
• Set hardware aside in a small tray so nothing gets lost.

Step 3: Unplug the coil electrical connector

• Press the connector lock tab with your thumb.
• Pull the connector straight back (do not pull on the wires).
• If stuck, wiggle gently while pressing the tab.

Step 4: Remove the ignition coil hold-down bolt

• Use a 10mm socket with a 3" extension and 1/4" drive ratchet to remove the coil bolt.
• Keep the bolt with that coil so it doesn’t get mixed up.

Step 5: Pull the coil out

• Twist the coil slightly left-right to break the seal, then pull straight up.
• If the rubber boot stays stuck down on the plug, pull it out carefully by hand (do not drop anything into the spark plug tube).

Step 6: Prep and install the new coil

• Put a very small dab of dielectric grease inside the rubber boot (this helps future removal and seals out moisture).
• Push the coil straight down until you feel it fully seat on the spark plug.

Step 7: Reinstall the coil bolt

• Start the bolt by hand a few turns to avoid cross-threading.
• Tighten using a torque wrench: Torque to 9.8 Nm (7.2 ft-lbs).

Step 8: Reconnect the coil connector

• Push the connector on until it clicks.
• Give it a gentle tug to confirm it’s locked.

Step 9: Reassemble what you removed

• Reinstall any ducting/brackets using a 10mm socket and 1/4" drive ratchet.
• Press the engine cover back on by hand until it snaps into place.

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✅ After Repair

• Start the engine and let it idle for 1-2 minutes. It should run smooth with no shaking.
• If the check-engine light was on, it may take a few drive cycles to turn off. If you have one, use an OBD2 scan tool to clear codes and confirm the misfire does not return.
• Test drive 10-15 minutes and recheck for any warning lights.

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💰 DIY vs Shop Cost

Shop Cost: ₹3,000-₹10,000 (parts + labor, depending on coils replaced)

DIY Cost: ₹1,200-₹6,500 (parts only, depending on brand and quantity)

You Save: ₹1,500-₹4,000+ by doing it yourself!

Shop labor rates vary but typically run 0.5-1.0 hours for this job.

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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.