WINDOW DEFOGGER SYSTEM SYSTEM DESCRIPTION


  1. GENERAL

    The thin heater wires of the defogger system are attached to the rear window and defog the rear window surface quickly. The indicator light illuminates while the system is operating. The system automatically turns off approximately 15 minutes after operation starts. For vehicles with the automatic air conditioning system, there is a timer extension function which can operate the window defogger system for up to an additional 45 minutes.

  2. FUNCTION OF MAIN COMPONENT

    Component Outline
    Air conditioning control*2 Detects defogger switch operation and transmits signals to the air conditioning amplifier through the LIN communication line.
    Main Body ECU (Instrument panel junction block assembly [DEF relay]) Receives rear window defogger activation request signals from the heater control*1 or air conditioning amplifier*2 and supplies power to the rear window defogger.
    Back door glass (Window defogger wire) Receives power from the defogger relay and heats the defogger wire.

    • *1: for Manual Air Conditioning System

    • *2: for Automatic Air Conditioning System

  3. DESCRIPTION

    Function Outline
    Defog rear window surface

    • The defogger relay receives rear window defogger activation request signals from the heater control*1 or air conditioning amplifier*2 and defogs the rear window surface.


    • Power received from the defogger relay heats the defogger wire.

    • *1: for Manual Air Conditioning System

    • *2: for Automatic Air Conditioning System