The official notice
Defect
On certain vehicles equipped with a 1.6L engine, the cylinder head cup plug (freeze plug) may become dislodged, resulting in a significant loss of coolant which could cause the engine to overheat. Under certain circumstances, water in the remaining coolant mixture may vaporize, resulting in a higher concentration of glycol (antifreeze). A high concentration of glycol could become flammable and, in the presence of an ignition source, could result in a fire causing property damage and/or personal injury.
Safety Risk
No risk description available.
Remedy
Dealers will inspect the cylinder head. If the cup plug is dislodged or leaking, the cylinder head assembly will be replaced. If the cup plug is not dislodged or leaking, a wicking sealant will be applied to the plug and a cover plate will be installed over the plug with adhesive.