The National Highway Traffic Safety Administration says it has opened two new investigations into Chrysler over complaints that the ignition key could shut the engine off and cause air bags not to deploy in a crash.
The investigations cover about 1.2 million vehicles.
The agency says it has received at least 32 complaints from drivers who say the ignition key of 2006-2007 Jeep Commander and 2005-2006 Jeep Grand Cherokee vehicles turned off after they accidentally hit it with their knees.
The second probe is related to Chrysler's recall of 2010 Dodge Journey, Grand Caravan and Chrysler Town & Country vehicles for a similar issue.