Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2004 Lexus ES 330FACTORY OEM SERVICE PROCEDURE
Ignition Coil ASSY (3MZ-FE): Replacement
- DISCONNECT ENGINE WIRE NO. 3 (BATTERY NEGATIVE TERMINAL)
- DRAIN ENGINE COOLANT (RH BANK) (See REPLACEMENT )
- REMOVE FRONT SUSPENSION UPPER BRACE CENTER (W/O TEMS, RH BANK) (See REPLACEMENT )
- REMOVE V-BANK COVER SUB-ASSY (See REPLACEMENT )
- REMOVE AIR CLEANER CAP SUB-ASSY (RH BANK) (See REPLACEMENT )
- REMOVE EMISSION CONTROL VALVE SET (RH BANK) (See REPLACEMENT )
- REMOVE INTAKE AIR SURGE TANK (RH BANK) (See REPLACEMENT )
- REMOVE IGNITION COIL ASSY
- Disconnect the 6 connectors.
- Remove the 6 bolts, then remove the 6 ignition coils.
HINT:
The ignition coil is installed with the bolt.
Factory Service Tools
Use the Manual With the Right Hardware
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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.