General Motors is expanding its recall of cars for a defect that can suddenly turn off the cars and disable the airbags.
The company also admits it made mistakes during the initial recall.
The defect is a faulty switch that may have caused more than 30 crashes and 13 deaths.
In some instances, the ignition switches turn off if the car is jarred, or if the key ring has extra weight on it.
Affected customers are being urged to take everything but the key off their key rings until a dealer fixes their car.
The recall affects more than 1,367,146 cars, including:
2005 - 2007 Cobalt, Pontiac G5
2003 - 2007 Saturn Ion
2006 - 2007 HHR
2006 - 2007 Pontiac Solstice and Saturn Sky models.
GM says its investigation of reports related to the defect was not as "robust" as it should have been.
“Ensuring our customers’ safety is our first order of business,” said GM North America President Alan Batey in a statement. “We are deeply sorry and we are working to address this issue as quickly as we can.”
The company has launched a review of its field report investigation process.