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That makes sense...the insurance auction would not take the time to root the car. If your software is not the most recent update there are people that can help...especially if you have a MCU1
You may be able to do this through the root process. Most likely the "dealer" that sold you the car with SC active has rooted the car and as long as you don't update the software you should (in theory) fly below the radar.
Are you getting updates currently? It may be as easy as not connecting to the internet at home...therefore not more updates for tesla to change the coding.