Ford Motor Company is recalling about 326 model year 2020 F-Series Super Duty and model year 2021 E-Series trucks.
Some of these vehicles may have an inadequate amount of axle lubricant, resulting in bearing seizure and leading to component fracture and driveshaft separation from the rear axle.
In the event of a rear-axle pinion stem fracture, customers would experience loss of vehicle motive power and loss of the park function.
If the parking brake is not applied, this could result in unintended vehicle movement, increasing the risk of injury or crash.
Ford says it is not aware of any reports of accidents or injuries.
What to do
Ford will contact owners and dealers will check the differential fluid level. If the fluid is at the proper level, no further action will be taken. If the fluid level is determined to be low, the rear axle assembly will be replaced free of charge.
Owners may contact Ford at (866) 436-7332. Ford's number for this recall is 20S09.