Hyundai Tucson: Warnings and indicators / Tailgate open warning light

This warning light illuminates when the tailgate is not closed securely.

Door ajar warning light
This warning light illuminates when a door is not closed securely. ...

Sunroof Open Warning Light (if equipped)
If the driver removes the ignition key (Smart key : turns off the engine) and opens the driver-side door when the sunroof is not fully closed, the warning chime will sound for approximately 7 se ...

Other information:

Hyundai Tucson (LM) 2010-2015 Owners Manual: Occupant Classification System (OCS)
Your vehicle is equipped with an Occupant Classification System (OCS) in the front passenger's seat. The OCS is designed to detect the presence of a properly-seated front passenger and determine if the passenger's front air bag should be enabled (may inflate) or not. The driver's front ai ...

Hyundai Tucson (LM) 2010-2015 Owners Manual: How vehicle audio works
AM and FM radio signals are broadcast from transmitter towers located around your city. They are intercepted by the radio antenna on your vehicle. This signal is then processed by the radio and sent to your vehicle speakers. When a strong radio signal has reached your vehicle, the precise engi ...

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