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.

2005 Lexus SC 430FACTORY OEM SERVICE PROCEDURE

Repair Instruction: Precaution

BASIC REPAIR HINT
1. HINTS ON OPERATIONS
  
  Fig 1: Identifying Basic Repair Hint
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. JACKING UP AND SUPPORTING VEHICLE
  1. Care must be taken when jacking up and supporting the vehicle. Be sure to lift and support the vehicle at the proper locations (see VEHICLE LIFT AND SUPPORT LOCATIONS ).
3. PRECOATED PARTS
  1. Precoated parts are bolts and nuts that are coated with seal lock adhesive at the factory.
  2. If a precoated part is retightened, loosened or moved in any way, it must be recoated with the specified adhesive.
  3. When reusing a precoated part, clean off the old adhesive and dry the part with compressed air. Then apply new seal lock adhesive appropriate to that part.
  4. Some seal lock adhesive harden slowly. You may have to wait for the seal lock adhesive to harden.
    
    Fig 2: Applying Seal Lock Adhesive
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
4. GASKETS
  1. When necessary, use a sealer on gaskets to prevent leaks.
5. BOLTS, NUTS AND SCREWS
  1. Carefully observe all the specifications for tightening torques. Always use a torque wrench.
6. FUSES
  1. When inspecting a fuse, check that the wire of the fuse is not broken.
  2. When replacing a fuse, be sure that the new fuse has the correct amperage rating. Do not use one with higher or lower rating.
    
    Fig 3: Identifying Fuses
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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.

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