This procedure covers removal and replacement of ignition coil packs on the 2012-2017 Toyota Camry 2.5L I4 engine, which uses individual coil-on-plug ignition for each cylinder.

Warnings

Tools required

Parts

• Ignition coil pack × 1 — Toyota 90919-02260 or equivalent

Preparation

1. Park vehicle on level surface and apply parking brake
2. Turn ignition to OFF position and remove key
3. Allow engine to cool for at least 30 minutes if recently operated
4. Open hood and secure with prop rod

Procedure

1. 1

   Access engine cover
   Remove the plastic engine cover by pulling upward firmly on the front edge to disengage the rubber grommets from the mounting posts. The cover is held only by friction grommets and does not use fasteners on this model.
2. 2

   Locate target ignition coil
   Identify which coil needs replacement. Cylinders are numbered 1-4 from passenger side to driver side (right to left when facing the engine). Each coil sits directly atop its corresponding spark plug.
3. 3

   Disconnect coil electrical connector
   Press down on the locking tab of the electrical connector attached to the coil pack and pull straight up to disconnect. The connector may be tight; wiggle gently while pulling if necessary. Do not pull on the wires themselves.
4. 4

   Remove ignition coil mounting bolt
   Using a 10mm socket with extension, remove the single bolt securing the ignition coil. Keep track of the bolt as it is small and can fall into the engine bay easily.
   Torque spec

   Ignition Coil Bolts8 Nm (6 lb-ft)
5. 5

   Extract ignition coil
   Grasp the coil body firmly and pull straight up with steady force. The coil boot forms a seal around the spark plug and may resist removal. Twist gently while pulling if stuck, but avoid excessive force that could damage the spark plug insulator. The coil boot should remain attached to the coil.
   ⚠If the rubber boot separates from the coil and remains on the spark plug, use needle-nose pliers to carefully extract it from the spark plug well
6. 6

   Inspect spark plug well and coil boot
   Check the spark plug well for any oil, coolant, or debris accumulation. Light dust is normal, but liquid indicates a valve cover gasket leak that should be addressed. Inspect the old coil's rubber boot for cracks, carbon tracking, or deterioration.
   ℹ️If oil is present in spark plug well, valve cover gasket replacement is recommended to prevent future coil failure
7. 7

   Prepare new ignition coil
   Apply a thin coat of dielectric grease to the inside of the new coil's rubber boot. This aids in future removal and helps prevent moisture intrusion. Do not use excessive grease.
8. 8

   Install new ignition coil
   Align the new coil with the spark plug and mounting hole. Push down firmly and evenly until the coil is fully seated on the spark plug. The coil body should sit flush against the valve cover surface. Insert the mounting bolt finger-tight.
9. 9

   Torque ignition coil bolt
   Using a torque wrench, tighten the ignition coil mounting bolt to specification. This is a small bolt threading into aluminum; over-torquing will strip the threads.
   Torque spec

   Ignition Coil Bolts8 Nm (6 lb-ft)
10. 10

    Reconnect electrical connector
    Push the electrical connector onto the coil pack terminal until it clicks into place. Tug gently to verify it is locked. Ensure the connector is fully seated and the locking tab is engaged.
11. 11

    Reinstall engine cover
    Align the engine cover grommets with the mounting posts on the valve cover and push down firmly until all grommets are fully seated. Verify the cover is secure and level.

Reassembly

1. If multiple coils were replaced, verify all electrical connectors are properly secured and locked
2. Ensure no tools or parts are left in the engine bay
3. Double-check that engine cover is properly seated on all mounting posts

Verification

• Start the engine and verify it runs smoothly without misfires or rough idle
• Check that the check engine light does not illuminate after starting
• Listen for any unusual clicking or arcing sounds from the ignition system
• If replacing a coil due to a misfire code, clear codes with a scan tool and test drive to confirm the issue is resolved

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