Truck broke down Friday night. Horrible grinding sounds.

[RickJ19Zeta8]

Also, they did update me today that it is half shaft (axle) and knuckle. I have no clue if that makes sense based on the symptoms but sounds in-line with what some have said. Of course no ETA was given.

Yes, makes sense. As someone previously posted, the half shaft nut was probably incorrectly torqued at the factory. It loosened up and then the engagement between the half shaft and wheel hub was slipping. Tesla is using a face spline for the mating of the halfshaft to hub vs. the traditional radial spline. The advantage is higher torque capacity. The downside is that IF the nut loosens, it looses engagement and ruins the spline which is what you experienced.

Dblcapcrimpin also had this issue. As well as some other early Cybertrucks. Probably process control at the factory or wrong torque set on the DC Driver tool.

 

[SeasonedTech]

Ah man! Hoping they figure it out sooner than later.

 

[kri11]

I picked up my Cybertruck recently, but didn't even make it home. The wheel hub nut for the front passenger side wheel came loose or broke as I was accelerating onto the freeway. The truck swerved, and the brakes were not as effective as they had just been. I managed to slow down, pulled off at the next exit, and immediately parked.
I initiated a service request in the app, and the truck was towed to the local service center. I have a loaner car, and damage will be repaired, but it just seems CRAZY dangerous to let a truck out of the factory with a loose wheel hub nut. Has anyone been tempted to hold Tesla responsible for negligence in a situation like this?