Seat belt warning light (for driver's seat)
The driver's seat belt warning light and chime will come on according to the following table when the ignition switch is in the ON position.
Seat belt warning light (for front passenger's seat)
The front passenger's seat belt warning light will activate to the following table when the ignition switch is in "ON" position.
Hyundai Sonata LF 2014-2019 Service Manual: Passenger Airbag (PAB) Module Repair procedures
Removal
1.
Disconnect the battery negative cable and wait for at least three minutes before beginning work.
2.
Remove the glove box housing.
(Refer to Body - "Glove Box Upper Cover Assembly")
3.
Disconnect the passenger airbag connector (A) and remove the PAB mounting bolts (B).
4.
...
Hyundai Sonata LF 2014-2019 Service Manual: Photo Sensor Description and Operation
Description
The photo sensor is located at the center of the defrost nozzles.
The photo sensor contains a photovoltaic (sensitive to
sunlight) diode. The solar radiation received by its light receiving
portion, generates an electromotive force in proportion to the amount of
radiation rece ...