When Do You Need To Replace Your BMW Battery

• Age: Batteries typically last 3-5 years. If yours is older, consider replacing it.
• Slow Engine Crank: Car takes longer than usual to start.
• Warning Lights: The battery light or check engine light is illuminated.
• Swollen Battery Case: A bulging battery case can indicate failure.
• Corrosion: White, powdery substance around the terminals.
• Electrical Issues: Dimming headlights, flickering interior lights, or malfunctioning accessories.
• Frequent Jump Starts: Constant need for jump-starting is a clear sign.
• Odd Smell: A rotten egg smell could indicate a battery leak.
• Failed Battery Test: Periodic professional battery tests show declining performance.
• Stalling or Power Issues: Issues like auto stop-start not functioning correctly.