After a frontal or side air bag inflates, it will deflate very quickly. Air bag inflation will not prevent the driver from seeing out of the windshield or being able to steer. Curtain air bags may remain partially inflated for some time after they deploy.
WARNING
After an air bag inflates, take the following precautions:
Noise and smoke from inflating air bag
When the air bags inflate, they make a loud noise and may produce smoke and powder in the air inside of the vehicle. This is normal and is a result of the ignition of the air bag inflator. After the air bag inflates, you may feel substantial discomfort in breathing because of the contact of your chest with both the seat belt and the air bag, as well as from breathing the smoke and powder. The powder may aggravate asthma for some people. If you experience breathing problems after an air bag deployment, seek medical attention immediately.
Though the smoke and powder are nontoxic, they may cause irritation to the skin, eyes, nose, throat, etc. If this is the case, wash and rinse with cold water immediately and seek medical attention if the symptoms persist.
Hyundai Sonata LF 2014-2019 Service Manual: Driver Airbag (DAB) Module and Clock Spring Repair procedures
Removal
1.
Disconnect the battery negative cable and wait for at least three minutes before beginning work.
2.
Remove the driver airbag module from the steering wheel after pressing the snap fit pin stopper.
3.
Remove the wiring fixing clip (C) and disconnect the horn connector (A).
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Hyundai Sonata LF 2014-2019 Owners Manual: Automatic reverse
If a window senses any obstacle while it is closing automatically, it will stop
and lower approximately 12 inches (30 cm) to allow the object to be cleared.
If the window detects the resistance while the power window switch is pulled
up continuously, the window will stop upward movement then lowe ...