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 LX 470FACTORY OEM SERVICE PROCEDURE
Control Units
CONTROL UNITS LOCATION
| Component | Location |
|---|---|
| ABS & BA & TRAC & VSC ECU | Behind left side of dash. See Figure. |
| A/C Amplifier | At right side of cargo area. See Figure. |
| Auto Wiper ECU | Behind left side of dash. See Figure. |
| Blower Motor Controller | Behind lower right side of dash. See Figure. |
| Body ECU | At left kick panel. See Figure. |
| Center Air Bag Sensor Assembly | Under front of center console. See Figure. |
| Engine Control Module | Behind right side of dash. See Figure. |
| Gateway ECU | Behind center of dash. See Figure. |
| Mayday ECU | Under center console. See Figure. |
| Moon Roof Control ECU | On roof, in front of moon roof. See Figure. |
| Navigation ECU | Under right front seat. See Figure. |
| Night View ECU | Behind left side of dash. See Figure. |
| Power Seat ECU | Below driver's seat. See Figure. |
| Remote Control Mirror ECU | Behind left side of dash. See Figure. |
| Shift Lock Control ECU | Below center dash. See Figure. |
| Sub Body ECU | At left rear quarterpanel. See Figure. |
| Suspension Control ECU | Behind left center of dash. See Figure. |
| Television Camera ECU | Under right front seat. See Figure. |
| Theft Deterrent ECU | Behind center of dash. See Figure. |
| Tilt & Telescopic ECU | Behind left side of dash. See Figure. |
| Towing Brake Controller | Behind left side of dash. See Figure. |
| VGRS ECU | Behind left side of dash. See Figure. |
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.
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