DETROIT (WWJ) – Nearly 73,000 Kias are being recalled for an air bag problem that could lead to injury.

The recall affects Rio Models built between Feb. 20, 2005 and Dec. 9, 2007.

The National Highway Traffic Safety Administration says a sensor mat inside the front passenger seat can crack and fail to detect whether a child is sitting in the seat. This means the air bag could inflate in a crash and injure the child.

Kia officials said they don’t know of any injuries tied to the problem.

Kia will notify owners, and dealers will replace the  seat sensor mat for free, beginning next month. Owners with questions are asked to contact Kia Consumer Assistance Center at 1-800-333-4542.