All warning lights are checked by placing the ignition switch in the ON position (do not start the engine).
Any light that does not illuminate should be checked by an authorized HYUNDAI dealer.
After starting the engine, check to make sure that all warning lights are off. If any are still on, this indicates a situation that needs attention.
Hyundai Tucson (LM) 2010-2015 Service Manual: Seat Belt Pretensioner (BPT) Description and Operation
Description
The Seat Belt Pretensioners (BPT) are installed inside Center
Pillar (LH & RH). When a vehicle crashes with a certain degree of
frontal impact, the pretensioner seat belt helps to reduce the severity
of injury to the front seat occupants by retracting the seat belt
webbing ...
Hyundai Tucson (LM) 2010-2015 Service Manual: Seat Belt Buckle Switch (BS) Repair procedures
Removal
1.
Disconnect the battery negative cable, and wait for at least three minutes before beginning work.
2.
Remove the front seat assembly. (Refer to the Body group- Front seat)
3.
Loosen the seat belt buckle mounting bolt and remove the seat belt buckle switch.
Installation
...