Ford in May directed the recall of about 39,000 large SUVs in the US, including the Ford Expedition and Lincoln Navigator, and advised owners to park them further away from buildings. After five more car fires on Friday, the company has put more than 66,000 vehicles on the recall list of models manufactured in 2021.
At the time the cars were recalled for the first time, Ford did not know what was causing the fire. But on Friday, the company said that it has caught fire due to a short circuit in the circuit board. The company has so far registered 21 fire cases in which one person has been injured, but there has been no report of the fire spreading to buildings.
Circuit boards are part of the battery junction box. Ford said dealers would check the box and replace it if found faulty. They will also remove or repair the cooling fan ground wire that connects to the junction box. The US carmaker said replacement devices are expected to be available by September.
Other recalls include the Ford Escape and Lincoln Corsair SUVs as well as some Ford Maverick small pickups from 2020 to 2022. All have 2.5-liter hybrid or plug-in hybrid powertrains.
Ford says that if the engine fails, significant amounts of oil and fuel vapor can leak into hot parts, which can lead to a fire. The company says it has 23 reports of fires around the world where the fire started while the engine was running but there were no casualties.
Engine failures can occur due to a crankshaft machining problem. That problem has been fixed in production, but the recalled vehicles may have it. Recall repair does not resolve an engine fault. Ford said in a statement that engine failures are rare, with 0.17 repairs per 1,000 vehicles.
Ford said dealers will add drain holes to an under-hood shield and replace the active grille shutters to allow more airflow and reduce under-hood temperatures to below the ignition point of fuel vapor or engine oil.
Note: Photos are indicative.