Federal auto safety regulators have launched an investigation into the safety of some of Fiat Chrysler's newer model trucks and SUVs.
The investigation involves about a million 2013 to 2016 model year Ram pickups and 2014 to 2016 Dodge Durango SUVs.
Regulators says they have reports of 23 crashes and nine injuries when cars rolled away after being parked.
The issue appears to be drivers not knowing if the car is in park because of confusion with an electronic knob shifter.
In April, Fiat Chrysler recalled more than a million other vehicles because of a different kind of shifter that also caused confusion, leading to rollaways.