2007 Lexus IS 350FACTORY OEM SERVICE PROCEDURE

Window Defogger System: Repair

  1. IF NECESSARY, REPAIR THE DEFOGGER WIRE 
    1. Clean the broken wire tips with a grease, wax and silicone remover.
    2. Place the masking tape along both sides of the wire.
      Fig 1: Placing Masking Tape Along Both Sides Of Wire
      G04050789Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Thoroughly mix the repair agent (Dupont paste No. 4817 or equivalent).
    4. Using a fine tip brush, apply a small amount of the agent to the wire.
    5. After a few minutes, remove the masking tape.
      NOTE: Do not repair the defogger wire again for at least 24 hours.
    Fig 2: Applying Small Amount Of Agent To Wire
    G04050790Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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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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