The National Highway Traffic Safety Administration has received nine complaints from Jeep SUV owners reporting engine fires.

U.S. auto safety regulators are investigating reports that the engines can catch fire on some Jeep SUVs and pickup trucks with the ignition turned off

Stellantis NV said it’s cooperating with US authorities investigating reports of Jeep engines catching fire, in a potential setback for the company that’s trying to reverse a drop in market share in North America.

A probe from the National Highway Traffic Safety Administration is looking into claims that certain Jeep Wrangler and Gladiator models can catch fire, even when the engine is shut off. According to the Associated Press,