2004 Lexus LS 430FACTORY OEM SERVICE PROCEDURE

Hints On Operations

Fig 1: [Identifying Basic Repair Hint]
G03693753Courtesy of Β© TOYOTA, LICENSE AGREEMENT TMS1002
BASIC REPAIR HINT DESCRIPTION

1 Looks
  • Always wear a clean uniform.
  • Hat and safety shoes must be worn.
2 Vehicle protection
  • Prepare a grille cover, fender cover, seat cover and floor mat before starting the operation.
3 Safe operation
  • When working with 2 or more persons, be sure to check safety for one another.
  • When working with the engine running, make sure to provide ventilation for exhaust fumes in the workshop.
  • If working on high temperature, high pressure, rotating, moving, or vibrating parts, wear appropriate safety equipment and take extra care not to injure yourself or others.
  • When jacking up the vehicle, be sure to support the specified location with a safety stand.
  • When lifting up the vehicle, use appropriate safety equipment.
4 Preparation of tools and measuring gauge
  • Before starting operation, prepare a tool stand, SST, gauge, oil, shop rag and parts for replacement.
5 Removal and installation, disassembly and assembly operations
  • Diagnose with a thorough understanding of proper procedures and of the reported problem.
  • Before removing the parts, check the general condition of the assembly and for deformation and damage.
  • When the assembly is complicated, take notes. For example, note the total number of electrical connections, bolts, or hoses removed. Add matchmarks to insure re-assembly of components in the original positions.

    Temporarily mark hoses and their fittings, if needed.

  • Clean and wash the removed parts if necessary and assemble them after a thorough check.
6 Removed parts
  • Place the removed parts in a separate box to avoid mixing them up with the new parts or contaminating the new parts.
  • As for non-reusable parts such as a gasket, an O-ring, and a self-locking nut, replace them with new ones following the instructions in this manual.
  • Retain the removed parts for customer inspection, if requested.
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:

  • 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.

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