Smart key unit

Disconnect the negative (-) battery terminal.
Open the trunk and remove the right side trim (A).
(Refer to TRUNK TRIM REPLACEMENT .)

Fig 1: Identifying Right Side Trim
Courtesy of KIA MOTORS AMERICA, INC.

Fig 2: Identifying Smart Key Unit
Courtesy of KIA MOTORS AMERICA, INC.
Loosen the nuts (2EA) from the smart key unit (A) after disconnecting the connector.

Fig 3: Identifying Smart Key Unit & Nuts
Courtesy of KIA MOTORS AMERICA, INC.