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.
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HOMESERVICE MANUALSLEXUS2004GX 470REPAIR AND DIAGNOSISELECTRICALCOMPONENT LOCATIONSELECTRICAL COMPONENT LOCATORCONTROL UNITS
2004 Lexus GX 470
Control Units
2004 Lexus GX 470SECTION Control Units
CONTROL UNITS LOCATION
| Component | Location |
|---|---|
| A/C Control Assembly (W/O Navigation) | Behind right side of dash. See Figure. |
| A/C ECU (W/Navigation) | Behind right side of dash. See Figure. |
| Blower Motor Linear Controller | Behind lower right center of dash. See Figure. |
| Body ECU | Behind left end of dash. See Figure. |
| Center Diff. Lock ECU | Behind right side of dash. See Figure. |
| Door Control Receiver | On left "D" pillar, behind trim. See Figure. |
| Engine Control Module | Behind right side of dash. See Figure. |
| Gateway ECU | Behind center of dash. See Figure. |
| Height Control Computer | At Left "D" pillar. See Figure. |
| Mayday ECU | On left side of cargo area. See Figure. |
| Moon Roof Control ECU & Motor | Above headliner, at center of windshield header. See Figure. |
| Navigation ECU | Under passenger's seat. See Figure. |
| Power Seat ECU | Lower left side of driver's seat. See Figure. |
| Rear Seat Audio Controller | Right side of dash. See Figure. |
| Rear Seat Entertainment ECU | At right kick panel. See Figure. |
| Remote Control Mirror ECU | Behind left side of dash. See Figure. |
| Shift Lock Control ECU | Under center console, near shift lever assembly. See Figure. |
| Skid Control ECU | Behind left end of dash, above driver side J/B. See Figure. |
| Stabilizer Control ECU | At left rear of vehicle. See Figure. |
| Sub Body ECU | Below left "D" pillar, behind trim. See Figure. |
| Suspension Control ECU | Behind left end of dash, above driver side J/B. See Figure. |
| Television Camera ECU | Left kick panel. See Figure. |
| Theft Deterrent ECU | Behind left side of dash. See Figure. |
| Tilt & Telescopic ECU | Behind left side of dash. See Figure. |
| Tire Pressure Monitor Computer | Right side of dash. See Figure. |
| Towing Brake Controller | Behind left side of dash. See Figure. |
| Transponder Key Computer | Behind upper right side of dash. See Figure. |
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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.