NHTSA Complaint #11483066 — 2021 FORD F-150

Upon getting into the vehicle, it was noticed that there was gear oil leaking all over the rear passenger wheel prompting me to remove the wheel cap. Inside, the axle nut that connects to the axle shaft was completely sheared off and not connected. I am not sure how long it was like this, but from my experience without this nut the axle could have slid into the differential causing a rear axle failure, if that were at highway speeds, or in descent while pulling a trailer that could have been very serious. The broken parts are with the vehicle at the servicing dealership Currently the vehicle is at the dealer being repaired. Due to part shortages and as noted by the dealer being unsafe to drive I will be without a vehicle for 3-4 weeks possibly. The problem has been reproduced by multiple other truck owners noted online in group forums etc., and the dealership was well aware of the issue noting there were 3 other similar trucks in for the same repair needed. There has been no inspection by they manufacturer, only by the dealership where purchased and servicing the vehicle. No noticeable issues right before the problem occurred. Approximately 4000 miles prior to the issue it was noted that the same wheel seemed to be locking and stuttering while turning. Almost as if the brakes/axle were locking right when taking the vehicle in for routine service. It was noted to the dealership, but being that only light service mechanics were on duty they could not do a full inspection. They did inspect brakes for locking etc. found no issues and the locking / stuttering was no longer noticeable.