[Domo55]

Hey I’m broke college kid with a 2008 328i and last year I needed a new battery but didn’t have the money so I had it serviced at my dads work by a non BMW mechanic. Shortly after I started getting “increased battery discharge” message and other battery messages then the car would light up but not start. I had no money to fix it so I let it sit for over a year. Now it’s completely dead no lights. I decided to look into it and noticed that the small blue wire shown labeled as 3 was unplugged. Is there anyway this could’ve cause the problem and is there anyway I can get my car started again. And yes I know it was stupid to not properly service it and to let it sit so long. Any advice is appreciated.