This warning light illuminates:
Hyundai Sonata LF 2014-2019 Service Manual: Start/Stop Button Repair procedures
Removal
1.
Disconnect the negative(-) battery terminal.
2.
Remove the center facia panel.
(Refer to Heating, Ventilation and Air Conditioning - "Controller")
3.
Remove the start/stop button (A) after loosening the screw (3EA).
Installation
1.
Install the start/stop button.
2.
...
Hyundai Sonata LF 2014-2019 Service Manual: General Service Information
General Information
Protection Of The Vehicle
Always be sure to cover fenders, seats, and floor areas before starting work.
The support rod must be inserted into the hole near the edge
of the hood whenever you inspect the engine compartment to prevent the
hood from fal ...