2012 Toyota Prius FourFACTORY OEM SERVICE PROCEDURE

Ignition Coil And Spark Plug: Removal: Removal

  1. REMOVE WINDSHIELD WIPER MOTOR AND LINK 
    1. Remove the windshield wiper motor and link. Refer to REMOVAL .
  2. REMOVE COWL BODY MOUNTING REINFORCEMENT LH  . Refer to REMOVAL - Step 7
  3. REMOVE OUTER COWL TOP PANEL SUB-ASSEMBLY  . Refer to REMOVAL - Step 8
  4. REMOVE NO. 2 CYLINDER HEAD COVER  . Refer to REMOVAL - Step 29
  5. REMOVE IGNITION COIL ASSEMBLY 
    1. Disconnect the 4 ignition coil connectors.
      Fig 1: Identifying Ignition Coil Connectors & Bolts
      GTY235183Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Remove the 4 bolts and 4 ignition coils.
      NOTE:

      When removing each ignition coil, do not damage the plug cap on the engine head cover opening or the upper edge of the spark plug tube.

  6. REMOVE SPARK PLUG 
    1. Using a 14 mm spark plug wrench, remove the 4 spark plugs.
      Fig 2: Identifying Spark Plug Wrench & Spark Plugs
      GTY218302Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Factory Service Tools

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.

Rather have a pro handle this?

A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.

Comes to youSame-day available12-month warranty
Get a Free Quote

No obligation. See pricing before you book.