If the remote key does not operate normally, you can lock or unlock the door by using the mechanical key.
Press the release button then the key will unfold automatically.
To fold the key, fold the key manually while pressing the release button.
Hyundai Sonata LF 2014-2019 Service Manual: AUX jack Repair procedures
Removal
1.
Disconnect the battery (-) terminals.
2.
Remove the floor console assembly.
(Refer to Body - "Floor Console Assembly")
3.
Remove the multimedia jack (A) after disconnect the connector and loosening the mounting screws.
Installation
1.
Connect the multimedia jack connecto ...
Hyundai Sonata LF 2014-2019 Owners Manual: Seat Belt Warning Light
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 activat ...