Comment by macNchz

I think it varies manufacturer to manufacturer, but even those that make it possible seemingly make you jump through hoops. I was researching potential replacements for my 16 year old car and found a lot of discussion about this re Mazda models:

https://www.cx30talk.com/threads/thoughts-on-tcu-disable.374...

> Mazda CEC makes it quite difficult to actually request/disable your TCU. It can take many phone calls and escalations to get someout to understand the request and actually "push the button" to send the disable event to your car.

Honestly I’m just totally disinterested in just about every current new car model.