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Hyundai Equus: Description and Operation - Auto Lighting Control System - Body Electrical System - Hyundai Equus VI 2009-2026 Service ManualHyundai Equus: Description and Operation

Description
In the state of IGN1 ON, when the multi function switch module detects auto light switch on, tail lamp relay output and head lamp low relay output are controlled according to the vertical and horizontal auto light sensor's input.

If IGN1 ON, The BCM monitors the range of this supply and raises up a failure as soon as the supply’s voltage is out of range. Then this failure occurs and as long as this is present, the head lamp must be turned on without taking care about the sunlight level provided by the sensor.
This is designed to prevent any head lamp cut off when the failure occurs during the night.
    Components and Components Location
    Component Location 1. Auto light sensor2. Head lamps3. Lighting switch (Auto)4. Tail lamps5. IPM (Instrument Panel Module) ...

    Auto Light Sensor Repair procedures
    Inspection In the state of IGN1 ON, when the multi function switch module detects auto light switch on, tail lamp relay output and head lamp low relay output are controlled according to auto li ...

    See also:

    Power Door Mirror Actuator Repair procedures
    Inspection 1. Remove the front door quadrant inner cover. Take care not to damage fixing clips. (Refer to Body - "Front Door") 2. Disconnect the power door mirror connector from the harness. ...

    Tire rotation
    To equalize tread wear, it is recommended that the tires be rotated every 7,500 miles (12,000 km) or sooner if irregular wear develops. During rotation, check the tires for correct balance. When r ...

    Change to "winter weight" oil if necessary
    In some climates it is recommended that a lower viscosity "winter weight" oil be used during cold weather. See section 8 for recommendations. If you aren't sure what weight oil you s ...

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