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Hyundai Equus: Auto Light Sensor Repair procedures - Auto Lighting Control System - Body Electrical System - Hyundai Equus VI 2009-2023 Service ManualHyundai Equus: 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 light sensor's input.
If IGN1 ON, The BCM monitors the range of this supply and raises up a failure as soon as the supplyТs 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.
Removal
1.
Disconnect the negative (-) battery terminal.
2.
Remove the rain sensor.
(Refer to Windshield Wiper/Washer - "Rain Sensor")
Installation
1.
Install the rain sensor.
2.
Connect the negative (-) battery terminal.
    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 ve ...

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