if I have that collection office calling me today September 11 2019 trying to take me to small claims court over the vehicle, am I still within that (SOL) and need to worry about legal proceedings or has the time run out to where they can no longer take any legal action against me?
I don't really follow this sentence. What does "calling me . . . trying to take me to small claims court" mean? Did someone from a collection agency call you today? If so, did you speak with the person? What does "trying to take me to small claims court" mean? If a collection agency wants to sue you, it knows how to do it, and it doesn't get done by making a phone call (i.e., there is no "trying").
I also don't know what "am I still within that (SOL)" might mean. A statute of limitations ("SOL") is a law that states how long after accrual of a legal claim a lawsuit must be filed. Once that time expires, then it's a done deal (unless some exception applies). Of course, an SOL doesn't prevent the filing of a lawsuit. If you get sued and believe the SOL has expired, you have to raise the SOL as a defense and prove that it has expired.
I'm just curious as to why they would still be trying to take me to court over the matter nearly a year after that statute was supposed to have run out.
First of all, it's not really clear that the premise of this statement is true (i.e., it's not clear that anyone is "trying to take [you] to court"). Second, I hope it's obvious that no one here has any insight into the state of mind of your creditors or any collection agency. Third, the expiration of an SOL doesn't have anything to do with someone's ability to make a phone call, and it's not beyond the realm of possibility that (a) the SOL hasn't actually expired (i.e., the person who told you it was going to expire in Oct. 2018 might have lied or been mistaken), (b) you might not know that the SOL has expired or (c) you might be ethical enough to pay your debt despite the expiration of the SOL.
if they do indeed take the matter to court (which I would not be attending) I'm guessing I will be notified by mail of the judgement?
Maybe. Or you might be notified about it when your bank account or some other asset gets levied (you're fortunate that, in TX, wage garnishment isn't a possibility). If you get sued and are aware of it, why on Earth wouldn't you "attend" or otherwise defend yourself?
Is it at that point that I would need to respond with the SOL expiration and if so, do they provide a way to send that.... I mean by way of providing me with "if you wish to dispute" information
If you get sued, you should be served with a summons (not a subpoena) and a complaint. If it happens in small claims court, the name of the document might be slightly different.
That is when you have an opportunity to defend yourself (by filing a responsive pleading or showing up at a hearing). If you wait until after a judgment has been entered, then you'll be SOL (and I don't mean "statute of limitations").
I'm uncertain of exactly what I have to do if I wanna resolve this. And honestly I really dont want to let them know where to find me.
Since it appears likely that the SOL has expired, you should have no problem being found, but that's really up to you. If you want to stick your head in the sand and hide, then you have no way of resolving anything. If you really want to resolve it, you can send a "go away" letter pursuant to the federal Fair Debt Collection Practices Act (which you can google for an abundance of information).