Mercedes-Benz USA and corporate parent DaimlerChrysler AG agree to pay $1.2 million in civil penalties to settle alleged violations of the Clean Air Act.

The Justice Dept. says the Environmental Protection Agency was not notified, as required, about emissions equipment defects on Mercedes vehicles between model-year ‘98 and ’06. Affected components included catalytic converters and air pumps.

For its part, Mercedes has launched a pair of voluntary recalls to address two issues and extended warranty coverage to address a third defect. Cost of the campaigns is estimated at $59 million, says a statement issued by the Justice Dept.

In addition, Mercedes will be required to improve its method of investigating alleged emissions defects, as well as its defect reporting process.

“Reliable and effective automobile pollution control systems are essential to protect human health and the environment,” says Sue Ellen Wooldridge, assisant attorney general for the Justice Dept.’s Environmental and Natural Resources Div.