That's for troubleshooting at the factory. It's not a new item either. Several years ago, I saw a factory rep plug a computer into a port (I think OBD but it might be a different one.) and he was working the windows and everything. I saw a video of a hacker taking over a Jeep Grand Cherokee to demonstrate remote vehicle control. A few things on my Mazda bother me like electric shifting and parking brake. I'm not even sure electric parking brakes are totally legal. When I got my license, driver training was more intense and one thing the manual said was "a vehicle shall have two forms of braking independent of each other, one of which must be mechanical".. If I have a total electrical failure, I can't down shift or use my emergency parking brake to stop. I thought about getting a Can-Am Spyder motorcycle to replace my Goldwing but saw where they tend to catch fire and then you have NO brakes. One guy had to bail when his caught fire and he had no brakes and had to jump off at 50 mph or burn up.

 

new 2019 and up vehciles have security gateway modules to prevent that kind of hacking

 

...until hackers find a flaw and it starts all over again. There are people who do nothing but look for back doors they can exploit.