WARNING: This page is about a different car, the 2014 Hyundai Veloster and 2013 Hyundai Veloster. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: AVN Remote Control Schematic Diagrams (1 Of 3)
Courtesy of HYUNDAI MOTOR AMERICA
Fig 2: AVN Remote Control Schematic Diagrams (2 Of 3)
Courtesy of HYUNDAI MOTOR AMERICA
Fig 3: AVN Remote Control Schematic Diagrams (3 Of 3)