Smart Key Unit

WARNING: This page is about a different car, the 2017 Hyundai Santa Fe Sport. However, it is still accessible from the selected car via links, so may be relevant.

Disconnect the negative (-) battery terminal.
Remove the driver crash pad lower panel.
(Refer to Body - "CRASH PAD LOWER PANEL ")
Remove the smart key unit (B) after loosening the mounting bolts (2 ea) and disconnecting the connector (A).

Fig 1: Locating Smart Key Unit And Connector With Mounting Bolts

Courtesy of HYUNDAI MOTOR AMERICA