How To Handle Warrants?

In 2022 I wrecked my car on the 17 highway northbound. I broke bones and at the hospital my blood was subpoenad on suspection of being under the influence.

I was homeless at the time and in a walker, then a walking boot. In a rehab, then moved around constantly during recovery. I received no mail, notice to appear in court, any of it and couldn't have even if I'd been out of treatment as I'd no address or phone.

Last month, a psychotic ex roommate tired to lie to cops and get me arrested by calling cops to the house and saying there was a physical fight. So, officers eventually showed up, pushing into my bedroom without warning. I had no idea she even called. I was in my bed on my phone, calm and depressed. They said hello and made me leave since I wasn't on the lease. I was kind, calm, cooperative and asked questions about my rights. The two ladies were kind and informative in return.

As I was leaving, they said "and please, get your warrant taken care of" to which I was shocked and asked what they were talking about. They said the city the warrant was from, they said they were there to take me in on it but I was so cooperative and calm that they didn't feel it was the right thing to do. I thanked them profusely and left.

My question is, what do I do now? How do I handle this? Will I have to go to jail? I had no idea there was any case against me and am referring to the accident because that's the only thing it could be, likely a DUI situation? I of course wasn't notified and now I'm terrified. Is there any way to handle this without me having to go to jail? I want to take care of it, absolutely. I'm just flying blind and scared.

In Phoenix/Glendale AZ. 1st offense.