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.
2007 Lexus ES 350FACTORY OEM SERVICE PROCEDURE
Control Units
CONTROL UNITS LOCATION
| Component | Location |
|---|---|
| Active Control Engine Mount ECU | Right side of dash. See Figure. |
| Certification ECU | Right side of dash. See Figure. |
| Clearance Warning ECU | Right side of luggage compartment. See Figure. |
| Cooling Fan ECU | Front of engine compartment. See Figure. |
| Distance Control ECU | Right side of dash. See Figure. |
| Door Control Receiver | Right side of trunk. See Figure. |
| Engine Control Module | Right rear of engine compartment. See Figure. |
| Gateway ECU | Right side of dash. See Figure. |
| Headlamp Swivel ECU | Left side of dash. See Figure. |
| ID Code Box | Left side of dash. See Figure. |
| Main Body ECU | Left side of dash. See Figure. |
| Occupant Classification ECU | Base of front passenger's seat. See Figure. |
| Outer Mirror Control ECU | Right side of dash. See Figure. |
| Position Control ECU & SW (Front LH Seat) | In driver's seat. See Figure. |
| Position Control ECU & SW (Front RH Seat) | In front passenger's seat. See Figure. |
| Power Window ECU (Front LH) | In left front door. See Figure. |
| Power Window ECU (Front RH) | In right front door. See Figure. |
| Power Window ECU (Rear LH) | In left rear door assembly. See Figure. |
| Power Window ECU (Rear RH) | In right rear door. See Figure. |
| Seat Belt Control ECU | Near base of "C" pillar. See Figure. |
| Shift Lock Control ECU | Under center console. See Figure. |
| Skid Control ECU (W/Actuator) | Right front of engine compartment. See Figure. |
| Sliding Roof Control ECU | Center front of roof. See Figure. |
| Steering Lock ECU | At steering column. See Figure. |
| Tilt & Telescopic ECU | At steering column. See Figure. |
| Tire Pressure Warning Antenna & Receiver | Center rear of roof. See Figure. |
| Tire Pressure Warning ECU | Right side of dash. See Figure. |
| Transmission Control ECU | On transmission. 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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