WARNING: This page is about a different car, the 2014 Hyundai Elantra GT and 2013 Hyundai Elantra GT. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Identifying Steering Wheel Remote Control Switch Connector (Left)
Courtesy of HYUNDAI MOTOR AMERICA
Fig 2: Identifying Steering Wheel Remote Control Switch Connector Screws