Hyundai, Kia to offer software upgrade to 8.3M U.S. vehicles to prevent thefts

WASHINGTON -- Sibling automakers Hyundai Motor Co. and Kia Corp. said they will offer a software upgrade to 8.3 million U.S. vehicles in response to increasing thefts targeting vehicles without push-button ignitions and immobilizing anti-theft devices, U.S. auto safety regulators said.