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.
1992 Lexus ES 300 AutomaticFACTORY OEM SERVICE PROCEDURE
Control Units
CONTROL UNITS LOCATION
| Component | Location | |
|---|---|---|
| ABS Control Unit | Behind right side of dash. | |
| Anti-Theft/Door Lock ECU | Behind right side of dash. | |
| Cooling Fan Control Unit | Behind right side of dash, behind glove compartment. | |
| Cruise Control ECU | Behind right side of dash. | |
| Elec. Controlled Trans. (ECT) ECU | Behind right side of dash. See Figure. | |
| Engine ECU | ||
| Electronic Control System | Behind right side of dash. See Figure. | |
| Relay, Control Unit & Sensors Location | Behind right side of dash. See Figure. | |
| Shift Lock Control ECU (A/T) | Under center console, behind shifter. | |
| Wireless Door Lock ECU | On left side of luggage compartment. | |
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.