Driver’s and passenger’s front air bags
Your vehicle is equipped with a Advanced Supplemental Restraint System (SRS) and lap/shoulder belts at both the driver and passenger seating positions.
The SRS consists of air bags which are located in the center of the steering wheel and the passenger's side front panel pad above the glove box.
The air bags are labeled with the letters “AIR BAG” embossed on the pad covers.

The purpose of the SRS is to provide the vehicle's driver and front passengers with additional protection than that offered by the seat belt system alone. The SRS uses sensors to gather information about the driver's seat position, the driver's and front passenger's seat belt usage and impact severity.
WARNING
To reduce the risk of serious injury or death from an inflating front air bags, take the following precautions:
Air bag - advanced supplemental restraint system
Side impact air bagsHyundai Tucson (LM) 2010-2015 Owners Manual: Tilt steering/Telescope steering
Pull down the lock-release lever (1) on the steering wheel column and adjust
the steering wheel angle (2) and position (3, if equipped). Move the steering wheel,
so it points toward your chest, not toward your face. Make sure you can see the
instrument panel warning lights and gauges. Afte ...
Hyundai Tucson (LM) 2010-2015 Service Manual: Starter Components and Components Location
Components
1. Front bracket assembly2. Magnet switch assembly3. Lever4. Reducer assembly5. Lever stop6. Gasket sheet7. Yoke assembly8. Armature assembly9. Brush holder assembly
...