WARNING: This page is about a different car, the 2017 Genesis G90. However, it is still accessible from the selected car via links, so may be relevant.
Check for continuity between terminals. If the continuity is not as specified, replace the hazard lamp switch.
Fig 1: Hazard Lamp Switch Connector Terminals
Courtesy of HYUNDAI MOTOR AMERICA
No
Description
1
Indicator (+)
2
Illumination (+)
3
Harzard lamp
4
Ground
5
Indicator (+)
6
Illumination (-)
Fig 2: Checking For Continuity Between Hazard Lamp Switch Terminals