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 SC 400FACTORY OEM SERVICE PROCEDURE
Stoplight Switch
- Stoplight switch is located above brake pedal. See Figure. To adjust stoplight switch, remove instrument lower finish panel and air duct (if necessary).
- Loosen stoplight switch lock nuts. Turn stoplight switch in until it lightly contacts pedal stopper. Turn stoplight switch out one turn. Clearance between stoplight switch nose and pedal stopper should be .02-.09" (0.5-2.4 mm). Tighten lock nut. Check brake light operation.
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.