2001 Lexus LS 430FACTORY OEM SERVICE PROCEDURE

Headlight Cleaner Switch Circuit

Check headlight cleaner switch. See HEADLIGHT CLEANER SWITCHΒ  under COMPONENT TESTS. Replace switch as necessary. If switch is okay, check wiring between switch and driver-side junction block ECU. See WIRING DIAGRAMSΒ . Repair or replace as necessary. If circuits are okay, go to BODY NO. 2 CONTROL SYSTEMΒ  table under TROUBLE SHOOTINGΒ .

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:

  • 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.