System Operation Check

1993 Lexus LS 400SECTION System Operation Check

Turn ignition switch to ON position (engine not running). If no fault codes are present, SRS warning light will go out after 10 seconds. If SRS is malfunctioning, SRS fault code will be stored in crash sensor memory during the following conditions:

  • SRS warning light does not glow.
  • SRS warning light does not go out after 10 seconds.
  • SRS warning light does not go out after engine is started.
  • SRS warning light comes on while driving.

    If SRS warning light indicates a malfunction, enter self-diagnostics and retrieve fault codes.

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.