Seller Refuses to Address Minor Issues

The car is a 2018 Honda CR-V EX.

The rattling sound is quite intermittent, which is frustrating. It seems to happen most often when I'm driving at lower speeds, say between 15-30 mph, and especially when I'm going over slightly uneven pavement or small bumps. It also sometimes occurs when I'm accelerating gently from a stop. It sounds like it's coming from the front passenger side of the car, maybe somewhere under the dashboard or in the engine bay, but it's hard to pinpoint exactly. It's not a constant loud rattle, more of a persistent, annoying 'clack-clack-clack' or a metallic vibration.

I purchased the car on October 15th, 2023. The seller initially agreed to fix the issues verbally right before I drove off the lot, and then he confirmed his willingness to fix the wiper via text message a couple of days later, around October 17th. He started to become evasive about the rattling sound shortly after that.

Yes, I do have some written documentation. We exchanged text messages where he explicitly said, 'Don't worry about the wiper, I'll get that fixed for you' and also mentioned he'd 'look into that rattling sound.' I also have a copy of the bill of sale, but it doesn't specifically list these promised repairs. The agreement to fix them was verbal and then confirmed via text.

No, I haven't had a mechanic inspect the car specifically for these issues since I purchased it. I was hoping the seller would honor his word first. I was planning to take it to my trusted mechanic if the seller continued to refuse, but I wanted to give him a chance to make it right.