[fensgrim]

And they will provide it as required per law. Note that the law does not require them to provide that in a form that would be usable for anything practical without doing moderate to heavy amount of reverse engineering (e.g. here's the source, here's the toolchain that was released in approximately same period of time, go figure out if this can even be built without recreating part of their internal build system, missing configs, etc).

[pabs3]

See the blog post, the GPLv2 goes further than what you suggest.

[minhaz23]

So if my Toyota head unit has FOSS they can provide that source code to me if I ask?

[numpad0]

  https://www.denso.com/global/en/opensource/ivi/toyota/

[ChocolateGod]

For the parts covered under GPL, yes, which includes the kernel (if it uses Linux).

If they're covered under a more permissive license (e.g. Apache, MIT) you're out of luck as these don't require redistribution of derivative work source code, only attribution.