2005 Lexus LS 430FACTORY OEM SERVICE PROCEDURE

Ignition Coil: Replacement

  1. REMOVE V-BANK COVER 
  2. REMOVE ENGINE ROOM SIDE COVER 
  3. REMOVE INTAKE AIR CONNECTOR PIPE 
  4. REMOVE OIL LEVEL GAGE SUB-ASSY (See step 8 in  REPLACEMENT  ) 
  5. REMOVE IGNITION COIL ASSY 
    1. Disconnect the ignition coil connector.
    2. Remove the bolt and pull out the ignition coil.
      3. Fig 1: Removing Ignition Coil Assy
      G02999168Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  6. INSTALL IGNITION COIL ASSY 
    1. Connect a new ignition coil to the spark plug, attach the ignition coil to the cylinder head cover, and install the bolt.
      1. Torque: 7.5 N.m (76 kgf.cm, 66 in.lbf) 
    2. Connect the ignition coil connector.
  7. INSTALL OIL LEVEL GAGE SUB-ASSY (See step 27 in  REPLACEMENT  ) 
  8. INSTALL INTAKE AIR CONNECTOR PIPE 
  9. INSTALL V-BANK COVER 
  10. INSTALL ENGINE ROOM SIDE COVER 
Factory Service Tools

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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.

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