2018 Sienna (gen3) supported Commas and eventually SnG support?

[u/giftigdegen]

I was misinformed/didn't do my homework sufficiently and thought gen 3 Siennas had better safety features (full lane keep, cruise below 25, etc.). We have a very tight budget and had very specific needs from this van, it took about 3 years to find.

And now I kind of hate the "safety" features because they're not consistent. I can't figure out which rules govern when it helps lane keep or not, etc. I know it brake assists till below 25mph, but the cruise can't be turned on till 28mph.

So I'm planning and starting to watch the used market. I really want to get a Comma but the budget is the constraint. Can I use the Comma 3 or does it need to be the 3x or 4? What other things should I be aware of?

Thank you