2017 Dodge Challengers with 5.7 Hemis and automatic transmissions could shift into sixth gear instead of Park and roll away, a new FCA recall warns.

The problem is caused by the software’s slow clutch-pressure vent rate, which can set an error code in the computer. That in turn puts the transmission into sixth-gear limp mode rather than Park; and if the owner does not engage the parking brakes, (many do not), the vehicle could roll away when parked.

The company will start fixing the problem in the third quarter of 2017. In the meantime, owners should watch the behavior of their transmission when parking, and be sure to apply the parking brake fully.

The recall has not yet been posted by the NHTSA (U.S. government) web site, but affected VINs can be searched by dealers in FCA’s systems.