WARNING: This page is about a different car, the 2020 Hyundai Santa Fe. However, it is still accessible from the selected car via links, so may be relevant.
Connect the cable of GDS to the data link connector in driver side crash pad lower panel, and turn on the GDS.
Select the 'S/W Management' and 'Car model'.
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Select "Airbag" and "ACU/SRSCM Variant Coding".
Courtesy of HYUNDAI MOTOR AMERICA
Perform the "ACU/SRSCM Variant Coding" procedure according to the GDS screen message.