Well, ostensibly it's to protect your vehicle from being "hacked". This is of course something of a risk when cars are always connected to the internet via cellular connections. E.g:
https://www.wired.com/2015/07/hackers-remotely-kill-jeep-highway/
However, it could be implemented in a manner that doesn't lock out someone who has physical access to the diagnostic port. The fact that it hasn't been implemented in such a way does make me suspect an ulterior motive...
-Uwe-
https://www.wired.com/2015/07/hackers-remotely-kill-jeep-highway/
However, it could be implemented in a manner that doesn't lock out someone who has physical access to the diagnostic port. The fact that it hasn't been implemented in such a way does make me suspect an ulterior motive...
-Uwe-