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.
1998 Lexus LX 470FACTORY OEM SERVICE PROCEDURE
Power Main Relay: Notes
NOTE:
Land Cruiser & Lexus LX470 use an instrument ECU and a power main relay. T100 uses a integration relay and a door lock control ECU in place of power main relay. Tacoma, RAV4 and 4Runner use a integration relay and a power main relay. For door lock control ECU and integration relay testing information, see
appropriate POWER DOOR LOCKS article.
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.