Hyundai Tucson: Warnings and indicators / Malfunction indicator (MIL) (check engine light)

This indicator light is part of the Engine Control System which monitors various emission control system components. If this light illuminates while driving, it indicates that a potential malfunction has been detected somewhere in the emission control system.

This light will also illuminate when the ignition switch is turned to the ON position, and will go out in a few seconds after the engine is started. If it illuminates while driving, or does not illuminate when the ignition switch is turned to the ON position, take your vehicle to your nearest authorized HYUNDAI dealer and have the system checked.

Generally, your vehicle will continue to be drivable, but have the system checked by an authorized HYUNDAI dealer promptly.

CAUTION

Immobilizer indicator (if equipped)
Without smart key system This indicator illuminates when the immobilizer key is inserted and turned to the ON position to start the engine. At this time, you can start the engine. The indicator ...

ESC indicator (Electronic Stability Control)
The ESC indicator will illuminate when the ignition switch is turned ON, but should go off after approximately 3 seconds. When the ESC is on, it monitors the driving conditions and under normal ...

Other information:

Hyundai Tucson (LM) 2010-2015 Owners Manual: Front fog light (if equipped)
Fog lights are used to provide improved visibility when conditions are poor due to fog, rain, snow, etc. Use the switch next to the headlight switch to turn the Fog Lights ON and OFF. The fog lights will turn on when fog light switch (1) is turned to ON after the head-lights are turned on ...

Hyundai Tucson (LM) 2010-2015 Service Manual: Ambient Sensor Repair procedures
Inspection 1. Ignition "OFF" 2. Disconnect ambient temperature sensor. 3. Check the resistance of ambient temperature sensor between terminals 1 and 2 whether it is changed by changing of the ambient temperature. 1. Sensor Ground2. Ambient Sensor Signal Specification Ambient t ...

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