DETROIT (AP) — A U.S. safety agency has opened two investigations into Chrysler minivans and SUVs as part of a widening inquiry into air bag and ignition switch problems across the U.S. auto industry.

The National Highway Traffic Safety Administration began asking automakers and parts suppliers for information on the interrelated issues after General Motors recalled 2.6 million small cars with faulty ignition switches earlier this year. The switches can slip out of the “run” position, causing engines to stall and knocking out power steering and disabling the air bags. In some cases, drivers have lost control.