Kia Motors Corp is recalling more than 507,000 vehicles in the United States because an electronic glitch may prevent air bags from deploying in a crash.
The recall follows an announcement in March by the National Highway Traffic Safety Administration that it was investigating why some air bags had failed to deploy in Kia vehicles and its affiliate Hyundai Motor Corp after crashes in which four people were killed and another six were injured.
The two Korean automakers have now recalled nearly 1.1 million US vehicles to address the issue.