More than 5 million Jeep vehicles on the road are part of an expanding federal investigation.
KPRC Local 2 Investigates has reported on a potential fire danger with some Jeep Wranglers. Now other Jeeps are in the spotlight, too, in what appears to be a completely separate investigation.
The Center for Auto Safety released video it said reveals a dangerous defect.
The federal government had raised serious concerns about fire danger following rear-impact wrecks with three older-model Jeeps.
The possible problem is with the fuel tank and fuel system architecture in some vehicles.
The investigation affects 1993 to 2004 Grand Cherokee, the 1993 to 2001 Cherokee and the 2002 to 2007 Jeep Liberty.
The National Highway Traffic Safety Administration said 15 people have died in Grand Cherokee fires.
Chrysler owns Jeep, and it disagrees with the government's findings.
"The vehicles are no more likely to experience this condition than their peer vehicles," the company said in the statement.
The vehicles under investigation have not been recalled. However, some other Jeep vehicles have been recalled.
More than 67,000 2010 Jeep Wranglers have been recalled in the United States.
The skid plate in a 2010 Wrangler with an automatic transmission can gather debris and ignite because its near the catalytic converter.