Hyundai Santa Fe: Auto Lighting Control System / Auto Light Sensor. Repair procedures
Check if the auto light control operates like a timing chart shown below. Tail
lamp output and head lamp (Low) output is controlled based on the auto light
sensor's input (illumination intensity) when the Auto Light Switch in Multi-Function
Switch is turned ON, and the vehicle is in IGN1 or IGN2 ON Mode. If IGN1 = ON,
BCM detects this voltage, and if the voltage exceeds rated voltage, then auto
light failure occurs. (below 4V or above 6V)
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Failure Occurrence : If auto light failure occurs, the head
lamp must be turned ON regardless of sun light level. This is
to prevent the head lamp from being turned OFF in case of auto
light failure during night time.
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In the state of IGN1 ON, when 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.The auto light control doesn't work if
the pin sunlight supply (5V regulated power from Ignition 1 power to sunlight
sensor) is in short circuit with the ground.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.



1. |
Disconnect the negative (-) battery terminal.
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2. |
Remove the photo & auto light sensor (A) from crash pad upper side by
using a flat-tip screwdriver.

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3. |
Remove the auto light connector.
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1. |
Reconnect the auto light connector.
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2. |
Install the auto light sensor.
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Other information:
Description
Variable Intake manifold Solenoid (VIS) valve is installed on the intake manifold.
The VIS valve controls the vacuum modulator which activates a valve in the intake
manifold. The ECM opens or closes this valve according to engine condition (Refer
to below table)...
Blind-Spot View Monitor displays the rear blind spot area of the vehicle in the
cluster when the turn signal is turned on to help change lanes.
Detecting sensor
[1], [2] : SVM-side view camera (camera located at bottom of the mirror)
Refer to the picture above for the detailed location of the detecting sensors...
Categories
Engine oil pressure warning light
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This warning light illuminates:
When the engine oil pressure is low.
If the engine oil pressure is low:
1. Drive carefully to the nearest safe location and stop your vehicle.
2. Turn the engine off and check the engine oil level (For more details, refer
to “Engine Oil” section in chapter 9). If the level is low, add oil as required.
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