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
Electrical Component Locator: Miscellaneous
MISCELLANEOUS LOCATION
| Component | Location |
|---|---|
| Airbag Squib (Driver) | Center of steering wheel. See Figure. |
| Airbag Squib (Passenger) | Right side of dash. See Figure. |
| Choke Coil | At left "C" pillar. See Figure. |
| Curtain Shield Airbag Squib (Left) | Left rear of vehicle. See Figure. |
| Curtain Shield Airbag Squib (Right) | Right rear of vehicle. See Figure. |
| Data Link Connector 3 | At lower left side of dash. See Figure. |
| Daytime Running Light Resistor | At left front of engine compartment, near engine room R/B. See Figure. |
| Diode | At left "C" pillar. See Figure. |
| Diode (A/C) | In front of left front strut tower. See Figure. |
| Engine No. 2 Wire | In engine compartment. See Figure. |
| Engine Room Main Wire | In engine compartment. See Figure. |
| Engine Room No. 2 Wire | In engine compartment. See Figure. |
| Engine Wire | In engine compartment. See Figure. |
| Generator | On front of engine. See Figure. |
| Horn (High) | Behind left side of front grille. See Figure. |
| Horn (Low) | Behind right side of front grille. See Figure. |
| Ignition Coil And Igniter No. 1 | Right side of engine. See Figure. |
| Ignition Coil And Igniter No. 2 | Left side of engine. See Figure. |
| Ignition Coil And Igniter No. 3 | Right side of engine. See Figure. |
| Ignition Coil And Igniter No. 4 | Left side of engine. See Figure. |
| Ignition Coil And Igniter No. 5 | Right side of engine. See Figure. |
| Ignition Coil And Igniter No. 6 | Left side of engine. See Figure. |
| Junction Connector No. 1 | Behind upper left side of dash. See Figure. |
| Junction Connector No. 2 | Behind upper center of dash. See Figure. |
| Junction Connector No. 3 | Behind left side of dash. See Figure. |
| Junction Connector No. 4 | Behind left center of dash. See Figure. |
| Junction Connector No. 5 | Behind upper left side of dash. See Figure. |
| Junction Connector No. 20 | Below right front seat. See Figure. |
| Junction Connector No. 21 | Below right front seat. See Figure. |
| Junction Connectors No. 6, 7, 8 & 9 | Behind upper right side of dash. See Figure. |
| Junction Connectors No. 10 & 11 | Behind lower right side of dash. See Figure. |
| Junction Connector No. 12 | Forward of left rear fenderwell. See Figure. |
| Junction Connector No. 13 | Near right front of luggage compartment. See Figure. |
| Junction Connectors No. 15, 16, 17, 18 & 19 | Behind upper center of dash. See Figure. |
| Navigation Amplifier | Behind right end of dash. See Figure. |
| Noise Filter (Ignition) | Top right front of engine. See Figure. |
| Noise Filter | At left "C" pillar. See Figure. |
| Pretensioner (Left) | Base of left "B" pillar. See Figure. |
| Pretensioner (Right) | Base of right "B" pillar. See Figure. |
| Roof Wire | Left "A" pillar. See Figure. |
| Seat Heater (Left) | In left front seat. See Figure. |
| Seat Heater (Right) | In right front seat. See Figure. |
| Sensor Wire | On engine. See Figure. |
| Side Airbag Squib (Left) | In driver's seat back. See Figure. |
| Side Airbag Squib (Right) | In right front seat back. See Figure. |
| Theft Deterrent Horn | On left rear of engine compartment. See Figure. |
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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