WARNING: This page is about a different car, the 2021 Hyundai Kona. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
Ground state
Mounting bolt tightening state (Chassis)
Mounting bolt tightening state (Engine)
Check the status of ground fault by chassis paint
Courtesy of HYUNDAI MOTOR AMERICA
NOTE:
Check the ground point.
(Refer to appropriate System Wiring Information - ETM Harness Layout - "Ground Point")