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.

1997 Lexus LS 400FACTORY OEM SERVICE PROCEDURE

Electrical Component Locations

ELECTRICAL COMPONENT LOCATIONS

Component	Location
Body ECU	Behind Left Side Of Instrument Panel
Power Main Relay	Near Parking Brake Lever, On Fuse/Relay Block
Driver Door ECU	Inside Driver's Door
Passenger Door ECU	Inside Front Passenger's Door

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.