[CamperBob2]

I can see both sides of this one. If I R&R my brakes or repair the steering rack, I can reasonably claim that I did so using good mechanical skills and practices, and prove it in court if necessary. But if I tinker around with a closed-source software system in my car, I literally have no idea what I'm doing. The changes I'm making could affect any and every other system on the car... and nobody but the factory engineers would know for sure.

The best solution is the simplest: no closed-source systems allowed in cars used on public roads. But I wouldn't hold my breath until everyone gets on board with that.