Symptoms of a weak battery on a BMW include slow engine cranking, dim headlights, flickering interior lights, and electronic malfunctions. Warning lights may appear on the dashboard, and features like power windows or infotainment may work intermittently. In colder weather, starting issues worsen. Prompt testing and replacement help prevent breakdowns and ensure reliable vehicle performance.<br />https://www.youtube.com/watch?v=xxj0tgepOt4
