Hyundai Tucson: Auto Lighting Control System / Auto Light Sensor Repair procedures
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 IPM 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.
| Tail lamp
| Head lamp
|
ON
| 1.0 ± 0.10V
|
OFF
| 2.3 ± 0.20V
|

1. |
Disconnect the negative (-) battery terminal. |
2. |
Remove the photo & auto light sensor (A) from crash pad upper side by using a flat-up screwdriver. 
|
3. |
Remove the auto light connector. |
1. |
Reconnect the auto light connector. |
2. |
Install the auto light sensor. |
Inspection
Operate the auto light switch, then check for continuity between terminals of multi-function switch connector. ...
Other information:
Hyundai Tucson (LM) 2010-2015 Owners Manual: Fan speed control
The fan speed can be set to the desired speed by operating the fan speed control
switches.
To change the fan speed, press the (
) the switch for higher speed, or press
the ( ) switch for lower speed. To
turn the fan speed control off, press the front blower OFF button. ...
Hyundai Tucson (LM) 2010-2015 Service Manual: Special Service Tools
Special Service Tools
Tool (Number and name)IllustrationUseCrankshaft front oil seal installer(09231-2E000)Installation of the front oil seal 09231-2E000 (installer)Valve stem seal installer(09222-2E000)Installation of the valve stem oil sealValve spring compressor(09222-3K000)(09222-3K100)Remo ...