Came out to $360 ($245 for battery, rest labor/fees). Obviously more than doing it myself, just a little gun shy with the new car and all the fancy software. 95% of my DIY work has been on an E36, which I feel is a pretty straightforward car. Main gripe is it took 2 hours because the car wash was backed up lol. They did do the multi-point inspection. Noticed a valve cover leak and timing cover leak, although I have yet to notice anything below the vehicle, any smells, and after the 4k miles we've put on it, oil level has not dropped via the computer, so it'll be left alone until there's an actual problem.

The CEL disappeared Saturday morning. I spent about 2 hours on the highway Friday so things definitely had time to charge up. Also stopped at an O'Reilly's and their reader also came back with no codes. I forgot to ask while I was there for them to scan to see if anything is lingering.

Radio starts up however it was left (whether mute or on), so I can testify there's a direct relationship.