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Home >> Lexus >> 2007 >> IS 350 >> Repair and Diagnosis >> Body & Frame >> Windows >> Windshield/Window Glass >> Window Defogger System >> System Description
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System Description

  1. GENERAL 

    The defogger system's thin heater wires are attached to the inside of the rear window and defog the window surface quickly. The indicator light illuminates while the system is operating. The system automatically turns off after approximately 15 minutes.

    HINT:

    The rear window defogger is linked with the mirror defogger.

  2. FUNCTION OF MAIN COMPONENT 
    FUNCTION OF MAIN COMPONENT

    Component Outline
    DEFOG Relay Receives rear defogger activation request signals from A/C amplifier assembly (A/C ECU) and supplies power to rear window defogger.
    Rear Window Defogger Receives power from DEFOG relay and heats defogger wire.
  3. DESCRIPTION 
    FUNCTION OUTLINE

    Function Outline
    Defogs the rear window surface
    • Receives rear defogger activation request signals from A/C amplifier assembly (A/C ECU) and supplies power to rear window defogger.
    • Receives power from DEFOG relay and heats defogger wire.
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