Korean carmaker Kia recalls 500,000 vehicles in United States over air bag fears.
DETROIT — Kia is recalling over a half-million vehicles in the U.S. because the air bags may not work in a crash.
Combined with a previous recall expansion by Hyundai, the affiliated automakers are recalling nearly 1.1 million vehicles because of the problem, which has been linked to four deaths.
The moves by both Korean automakers came after the National Highway Traffic Safety Administration opened an investigation into the problems in March.
The safety agency said at the time it had reports of six front-end crashes with significant damage to the cars.
Four people died, and six were injured.
Vehicles covered by the Kia recall include 2010 through 2013 Forte compact cars and 2011 through 2013 Optima midsize cars.
Also covered are Optima Hybrid and Sedona minivans from 2011 and 2012.
In April, Hyundai expanded a recall from earlier in the year to 580,000 vehicles. Those include the 2011 through 2013 Sonata midsize car and the 2011 and 2012 Sonata Hybrid. Hyundai says the recall now includes all vehicles with the same air bag computers.
Both automakers say they’re working on a fix. Kia said it would notify owners by July 27, while Hyundai said its notification runs from April 20 to June 15.
Both Hyundai and Kia will offer loaner vehicles to owners who request them.
Government documents say a short circuit can develop in an air bag control computer made by parts supplier ZF-TRW, and the air bags can fail to deploy. The computer detects a crash signal, issues a command to inflate the air bags and prepares seat belts for a crash if necessary.
In investigation documents, NHTSA said it understands the Kia Fortes under investigation use similar air bag control computers made by ZF-TRW.