"The involved vehicles' rear suspension system contains leaf springs that are constructed of either three or four leaves. There is a possibility that a leaf could fracture due to stress and corrosion," Toyota said in a statement today.
If the vehicle continues to be used, it could lead to the broken leaf coming in contact with surrounding components, including the fuel tank and causing a leak, the company said.
"In the presence of an ignition source, this could result in a fire," the car maker said.
Toyota said it was not aware of any injuries due to the potential defect. The vehicles belong to model years 2005-2011, the company said.