DETROIT - Fiat Chrysler is recalling 4.8 million vehicles in the U.S. because in rare circumstances, drivers may not be able to turn off the cruise control.

The company is warning owners not to use cruise control until the cars, SUVs and trucks can be fixed with a software update.

The recall includes 15 Jeep, Dodge, Chrysler and Ram models from six model years. Models in other countries also are affected.

Fiat Chrysler says the condition can occur if the cruise control accelerates at the same time an electrical short-circuit happens. But the brakes are designed to overpower the engine and the vehicles could still be stopped. Shifting into park would cancel the cruise.

The problem was found in testing. FCA says it has no reports of crashes or injuries.

Recalled Vehicles:

2015-17 Chrysler 200

2014-18 Chrysler 300

2017-18 Chrysler Pacifica

2015-18 Dodge Challenger

2014-18 Dodge Charger

2014-18 Dodge Journey

2014-18 Dodge Durango

2014-18 Jeep Cherokee

2014-18 Jeep Grand Cherokee

2018 Jeep Wrangler

2014-19 Ram 1500

2014-18 Ram 2500

2014-18 Ram 3500

2014-18 Ram 3500 cab chassis

2014-18 Ram 4500/5500 cab chassis