WASHINGTON (AP) - Hyundai says it's recalling nearly 400,000 Sonata passenger cars to fix a problem with the air bag system.

The recall affects 2006-2008 Sonata vehicles equipped with an advanced air bag system. The system disables the front passenger seat's front air bag when it detects the presence of a child restraint system or a small child in the seat.

The idea is to prevent injuries to a child that could result from the air bag inflating during a crash. But Hyundai says it received complaints that the system can mistake a small adult for a child, preventing the passenger air bag from inflating in a crash.

Hyundai says it's not aware of any injuries, but is conducting the recall to "ensure the safety" of its customers.

The recall is expected to begin in late May.

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